Home / 738,167.20-1,018,670.72-398,635.42

Finding the Fourth Proportional to 738,167.20, 1,018,670.72 and 398,635.42

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Solution

The fourth proportional to 738,167.20, 1,018,670.72 and 398,635.42 is: 550,116.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,167.20 : 1,018,670.72 = 398,635.42 : x
  2. Step 2: Convert to fraction form
    738,167.20/1,018,670.72 = 398,635.42/x
  3. Step 3: Cross multiply
    738,167.20x = 1,018,670.72 × 398,635.42
  4. Step 4: Simplify right side
    738,167.20x = 406,078,230,308.90
  5. Step 5: Solve for x
    x = 406,078,230,308.90/738,167.20
  6. Step 6: Final answer
    x = 550,116.87

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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.