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Finding the Fourth Proportional to 521,744.32, 720,024.96 and 292,311.28

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Solution

The fourth proportional to 521,744.32, 720,024.96 and 292,311.28 is: 403,399.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,744.32 : 720,024.96 = 292,311.28 : x
  2. Step 2: Convert to fraction form
    521,744.32/720,024.96 = 292,311.28/x
  3. Step 3: Cross multiply
    521,744.32x = 720,024.96 × 292,311.28
  4. Step 4: Simplify right side
    521,744.32x = 210,471,417,689.55
  5. Step 5: Solve for x
    x = 210,471,417,689.55/521,744.32
  6. Step 6: Final answer
    x = 403,399.54

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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.