Home / 678,587.40-1,017,881.10-627,265.80

Finding the Fourth Proportional to 678,587.40, 1,017,881.10 and 627,265.80

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Solution

The fourth proportional to 678,587.40, 1,017,881.10 and 627,265.80 is: 940,898.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,587.40 : 1,017,881.10 = 627,265.80 : x
  2. Step 2: Convert to fraction form
    678,587.40/1,017,881.10 = 627,265.80/x
  3. Step 3: Cross multiply
    678,587.40x = 1,017,881.10 × 627,265.80
  4. Step 4: Simplify right side
    678,587.40x = 638,482,002,496.38
  5. Step 5: Solve for x
    x = 638,482,002,496.38/678,587.40
  6. Step 6: Final answer
    x = 940,898.70

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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.