Home / 749,028.60-1,123,542.90-646,385.40

Finding the Fourth Proportional to 749,028.60, 1,123,542.90 and 646,385.40

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Solution

The fourth proportional to 749,028.60, 1,123,542.90 and 646,385.40 is: 969,578.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,028.60 : 1,123,542.90 = 646,385.40 : x
  2. Step 2: Convert to fraction form
    749,028.60/1,123,542.90 = 646,385.40/x
  3. Step 3: Cross multiply
    749,028.60x = 1,123,542.90 × 646,385.40
  4. Step 4: Simplify right side
    749,028.60x = 726,241,726,833.66
  5. Step 5: Solve for x
    x = 726,241,726,833.66/749,028.60
  6. Step 6: Final answer
    x = 969,578.10

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Double scale
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Similar ratio
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1.5x scale

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.