Home / 738,191.48-1,018,704.20-398,659.72

Finding the Fourth Proportional to 738,191.48, 1,018,704.20 and 398,659.72

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Solution

The fourth proportional to 738,191.48, 1,018,704.20 and 398,659.72 is: 550,150.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,191.48 : 1,018,704.20 = 398,659.72 : x
  2. Step 2: Convert to fraction form
    738,191.48/1,018,704.20 = 398,659.72/x
  3. Step 3: Cross multiply
    738,191.48x = 1,018,704.20 × 398,659.72
  4. Step 4: Simplify right side
    738,191.48x = 406,116,331,134.82
  5. Step 5: Solve for x
    x = 406,116,331,134.82/738,191.48
  6. Step 6: Final answer
    x = 550,150.39

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Double scale
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Similar ratio
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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.