Home / 918,422.48-1,377,635.88-287,337.44

Finding the Fourth Proportional to 918,422.48, 1,377,635.88 and 287,337.44

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Solution

The fourth proportional to 918,422.48, 1,377,635.88 and 287,337.44 is: 431,006.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,422.48 : 1,377,635.88 = 287,337.44 : x
  2. Step 2: Convert to fraction form
    918,422.48/1,377,635.88 = 287,337.44/x
  3. Step 3: Cross multiply
    918,422.48x = 1,377,635.88 × 287,337.44
  4. Step 4: Simplify right side
    918,422.48x = 395,846,367,011.35
  5. Step 5: Solve for x
    x = 395,846,367,011.35/918,422.48
  6. Step 6: Final answer
    x = 431,006.84

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.