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Finding the Fourth Proportional to 520,967.38, 718,965.12 and 291,522.66

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Solution

The fourth proportional to 520,967.38, 718,965.12 and 291,522.66 is: 402,318.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,967.38 : 718,965.12 = 291,522.66 : x
  2. Step 2: Convert to fraction form
    520,967.38/718,965.12 = 291,522.66/x
  3. Step 3: Cross multiply
    520,967.38x = 718,965.12 × 291,522.66
  4. Step 4: Simplify right side
    520,967.38x = 209,594,622,772.01
  5. Step 5: Solve for x
    x = 209,594,622,772.01/520,967.38
  6. Step 6: Final answer
    x = 402,318.13

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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.