Home / 781,553.25-1,078,543.49-442,014.21

Finding the Fourth Proportional to 781,553.25, 1,078,543.49 and 442,014.21

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Solution

The fourth proportional to 781,553.25, 1,078,543.49 and 442,014.21 is: 609,979.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,553.25 : 1,078,543.49 = 442,014.21 : x
  2. Step 2: Convert to fraction form
    781,553.25/1,078,543.49 = 442,014.21/x
  3. Step 3: Cross multiply
    781,553.25x = 1,078,543.49 × 442,014.21
  4. Step 4: Simplify right side
    781,553.25x = 476,731,546,472.92
  5. Step 5: Solve for x
    x = 476,731,546,472.92/781,553.25
  6. Step 6: Final answer
    x = 609,979.61

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Double scale
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1.5x scale

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.