Home / 739,511.20-1,109,785.20-319,088.80

Finding the Fourth Proportional to 739,511.20, 1,109,785.20 and 319,088.80

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Solution

The fourth proportional to 739,511.20, 1,109,785.20 and 319,088.80 is: 478,856.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,511.20 : 1,109,785.20 = 319,088.80 : x
  2. Step 2: Convert to fraction form
    739,511.20/1,109,785.20 = 319,088.80/x
  3. Step 3: Cross multiply
    739,511.20x = 1,109,785.20 × 319,088.80
  4. Step 4: Simplify right side
    739,511.20x = 354,120,027,725.76
  5. Step 5: Solve for x
    x = 354,120,027,725.76/739,511.20
  6. Step 6: Final answer
    x = 478,856.88

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Double scale
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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.