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Finding the Fourth Proportional to 1,249,741.85, 1,724,640.32 and 676,781.87

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Solution

The fourth proportional to 1,249,741.85, 1,724,640.32 and 676,781.87 is: 933,957.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,741.85 : 1,724,640.32 = 676,781.87 : x
  2. Step 2: Convert to fraction form
    1,249,741.85/1,724,640.32 = 676,781.87/x
  3. Step 3: Cross multiply
    1,249,741.85x = 1,724,640.32 × 676,781.87
  4. Step 4: Simplify right side
    1,249,741.85x = 1,167,205,293,915.75
  5. Step 5: Solve for x
    x = 1,167,205,293,915.75/1,249,741.85
  6. Step 6: Final answer
    x = 933,957.12

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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.