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Finding the Fourth Proportional to 715,987.71, 988,098.51 and 444,143.20

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Solution

The fourth proportional to 715,987.71, 988,098.51 and 444,143.20 is: 612,939.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,987.71 : 988,098.51 = 444,143.20 : x
  2. Step 2: Convert to fraction form
    715,987.71/988,098.51 = 444,143.20/x
  3. Step 3: Cross multiply
    715,987.71x = 988,098.51 × 444,143.20
  4. Step 4: Simplify right side
    715,987.71x = 438,857,234,146.63
  5. Step 5: Solve for x
    x = 438,857,234,146.63/715,987.71
  6. Step 6: Final answer
    x = 612,939.62

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Double scale
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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.