Home / 1,221,816.20-1,832,897.10-380,280.20

Finding the Fourth Proportional to 1,221,816.20, 1,832,897.10 and 380,280.20

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Solution

The fourth proportional to 1,221,816.20, 1,832,897.10 and 380,280.20 is: 570,474.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,816.20 : 1,832,897.10 = 380,280.20 : x
  2. Step 2: Convert to fraction form
    1,221,816.20/1,832,897.10 = 380,280.20/x
  3. Step 3: Cross multiply
    1,221,816.20x = 1,832,897.10 × 380,280.20
  4. Step 4: Simplify right side
    1,221,816.20x = 697,014,475,767.42
  5. Step 5: Solve for x
    x = 697,014,475,767.42/1,221,816.20
  6. Step 6: Final answer
    x = 570,474.08

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Double scale
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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.