Home / 900,500.30-1,242,721.11-513,372.97

Finding the Fourth Proportional to 900,500.30, 1,242,721.11 and 513,372.97

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Solution

The fourth proportional to 900,500.30, 1,242,721.11 and 513,372.97 is: 708,472.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,500.30 : 1,242,721.11 = 513,372.97 : x
  2. Step 2: Convert to fraction form
    900,500.30/1,242,721.11 = 513,372.97/x
  3. Step 3: Cross multiply
    900,500.30x = 1,242,721.11 × 513,372.97
  4. Step 4: Simplify right side
    900,500.30x = 637,979,427,122.40
  5. Step 5: Solve for x
    x = 637,979,427,122.40/900,500.30
  6. Step 6: Final answer
    x = 708,472.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.