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Finding the Fourth Proportional to 715,171.55, 986,498.97 and 424,585.89

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Solution

The fourth proportional to 715,171.55, 986,498.97 and 424,585.89 is: 585,668.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,171.55 : 986,498.97 = 424,585.89 : x
  2. Step 2: Convert to fraction form
    715,171.55/986,498.97 = 424,585.89/x
  3. Step 3: Cross multiply
    715,171.55x = 986,498.97 × 424,585.89
  4. Step 4: Simplify right side
    715,171.55x = 418,853,543,764.52
  5. Step 5: Solve for x
    x = 418,853,543,764.52/715,171.55
  6. Step 6: Final answer
    x = 585,668.63

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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.