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Finding the Fourth Proportional to 655,447.17, 904,796.70 and 440,711.72

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Solution

The fourth proportional to 655,447.17, 904,796.70 and 440,711.72 is: 608,370.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,447.17 : 904,796.70 = 440,711.72 : x
  2. Step 2: Convert to fraction form
    655,447.17/904,796.70 = 440,711.72/x
  3. Step 3: Cross multiply
    655,447.17x = 904,796.70 × 440,711.72
  4. Step 4: Simplify right side
    655,447.17x = 398,754,507,123.66
  5. Step 5: Solve for x
    x = 398,754,507,123.66/655,447.17
  6. Step 6: Final answer
    x = 608,370.17

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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.