Home / 642,148.32-886,760.36-480,723.12

Finding the Fourth Proportional to 642,148.32, 886,760.36 and 480,723.12

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Solution

The fourth proportional to 642,148.32, 886,760.36 and 480,723.12 is: 663,843.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,148.32 : 886,760.36 = 480,723.12 : x
  2. Step 2: Convert to fraction form
    642,148.32/886,760.36 = 480,723.12/x
  3. Step 3: Cross multiply
    642,148.32x = 886,760.36 × 480,723.12
  4. Step 4: Simplify right side
    642,148.32x = 426,286,206,951.52
  5. Step 5: Solve for x
    x = 426,286,206,951.52/642,148.32
  6. Step 6: Final answer
    x = 663,843.84

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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.