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Finding the Fourth Proportional to 662,913.40, 914,790.96 and 387,296.82

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Solution

The fourth proportional to 662,913.40, 914,790.96 and 387,296.82 is: 534,452.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,913.40 : 914,790.96 = 387,296.82 : x
  2. Step 2: Convert to fraction form
    662,913.40/914,790.96 = 387,296.82/x
  3. Step 3: Cross multiply
    662,913.40x = 914,790.96 × 387,296.82
  4. Step 4: Simplify right side
    662,913.40x = 354,295,629,772.75
  5. Step 5: Solve for x
    x = 354,295,629,772.75/662,913.40
  6. Step 6: Final answer
    x = 534,452.36

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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.