Home / 753,998.90-1,130,998.35-671,330.30

Finding the Fourth Proportional to 753,998.90, 1,130,998.35 and 671,330.30

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Solution

The fourth proportional to 753,998.90, 1,130,998.35 and 671,330.30 is: 1,006,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,998.90 : 1,130,998.35 = 671,330.30 : x
  2. Step 2: Convert to fraction form
    753,998.90/1,130,998.35 = 671,330.30/x
  3. Step 3: Cross multiply
    753,998.90x = 1,130,998.35 × 671,330.30
  4. Step 4: Simplify right side
    753,998.90x = 759,273,461,605.01
  5. Step 5: Solve for x
    x = 759,273,461,605.01/753,998.90
  6. Step 6: Final answer
    x = 1,006,995.45

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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.