Home / 840,456.25-1,254,129.30-749,876.30

Finding the Fourth Proportional to 840,456.25, 1,254,129.30 and 749,876.30

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Solution

The fourth proportional to 840,456.25, 1,254,129.30 and 749,876.30 is: 1,118,965.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,456.25 : 1,254,129.30 = 749,876.30 : x
  2. Step 2: Convert to fraction form
    840,456.25/1,254,129.30 = 749,876.30/x
  3. Step 3: Cross multiply
    840,456.25x = 1,254,129.30 × 749,876.30
  4. Step 4: Simplify right side
    840,456.25x = 940,441,839,205.59
  5. Step 5: Solve for x
    x = 940,441,839,205.59/840,456.25
  6. Step 6: Final answer
    x = 1,118,965.85

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.