Home / 1,146,006,000.20-1,719,009,000.30-409,428,774.20

Finding the Fourth Proportional to 1,146,006,000.20, 1,719,009,000.30 and 409,428,774.20

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Solution

The fourth proportional to 1,146,006,000.20, 1,719,009,000.30 and 409,428,774.20 is: 614,143,161.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,146,006,000.20 : 1,719,009,000.30 = 409,428,774.20 : x
  2. Step 2: Convert to fraction form
    1,146,006,000.20/1,719,009,000.30 = 409,428,774.20/x
  3. Step 3: Cross multiply
    1,146,006,000.20x = 1,719,009,000.30 × 409,428,774.20
  4. Step 4: Simplify right side
    1,146,006,000.20x = 703,811,747,831,596,416
  5. Step 5: Solve for x
    x = 703,811,747,831,596,416/1,146,006,000.20
  6. Step 6: Final answer
    x = 614,143,161.30

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Half scale
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Double scale
Find fourth proportional to 1,146,006,001.20, 1,719,009,001.80 and 409,428,775.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.