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Finding the Fourth Proportional to 631,522.43, 871,490.65 and 345,036.35

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Solution

The fourth proportional to 631,522.43, 871,490.65 and 345,036.35 is: 476,144.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,522.43 : 871,490.65 = 345,036.35 : x
  2. Step 2: Convert to fraction form
    631,522.43/871,490.65 = 345,036.35/x
  3. Step 3: Cross multiply
    631,522.43x = 871,490.65 × 345,036.35
  4. Step 4: Simplify right side
    631,522.43x = 300,695,952,935.13
  5. Step 5: Solve for x
    x = 300,695,952,935.13/631,522.43
  6. Step 6: Final answer
    x = 476,144.53

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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.