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Finding the Fourth Proportional to 905,425.60, 1,249,414.19 and 523,477

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Solution

The fourth proportional to 905,425.60, 1,249,414.19 and 523,477 is: 722,355.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,425.60 : 1,249,414.19 = 523,477 : x
  2. Step 2: Convert to fraction form
    905,425.60/1,249,414.19 = 523,477/x
  3. Step 3: Cross multiply
    905,425.60x = 1,249,414.19 × 523,477
  4. Step 4: Simplify right side
    905,425.60x = 654,039,591,938.63
  5. Step 5: Solve for x
    x = 654,039,591,938.63/905,425.60
  6. Step 6: Final answer
    x = 722,355.97

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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.