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Finding the Fourth Proportional to 604,053.90, 908,049.15 and 427,781.70

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Solution

The fourth proportional to 604,053.90, 908,049.15 and 427,781.70 is: 643,066.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,053.90 : 908,049.15 = 427,781.70 : x
  2. Step 2: Convert to fraction form
    604,053.90/908,049.15 = 427,781.70/x
  3. Step 3: Cross multiply
    604,053.90x = 908,049.15 × 427,781.70
  4. Step 4: Simplify right side
    604,053.90x = 388,446,809,070.56
  5. Step 5: Solve for x
    x = 388,446,809,070.56/604,053.90
  6. Step 6: Final answer
    x = 643,066.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.