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Finding the Fourth Proportional to 655,397.27, 904,448.45 and 383,517.43

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Solution

The fourth proportional to 655,397.27, 904,448.45 and 383,517.43 is: 529,254.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,397.27 : 904,448.45 = 383,517.43 : x
  2. Step 2: Convert to fraction form
    655,397.27/904,448.45 = 383,517.43/x
  3. Step 3: Cross multiply
    655,397.27x = 904,448.45 × 383,517.43
  4. Step 4: Simplify right side
    655,397.27x = 346,871,743,809.16
  5. Step 5: Solve for x
    x = 346,871,743,809.16/655,397.27
  6. Step 6: Final answer
    x = 529,254.18

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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.