Home / 992,117.70-1,488,143.34-431,152.20

Finding the Fourth Proportional to 992,117.70, 1,488,143.34 and 431,152.20

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Solution

The fourth proportional to 992,117.70, 1,488,143.34 and 431,152.20 is: 646,713.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,117.70 : 1,488,143.34 = 431,152.20 : x
  2. Step 2: Convert to fraction form
    992,117.70/1,488,143.34 = 431,152.20/x
  3. Step 3: Cross multiply
    992,117.70x = 1,488,143.34 × 431,152.20
  4. Step 4: Simplify right side
    992,117.70x = 641,616,274,956.35
  5. Step 5: Solve for x
    x = 641,616,274,956.35/992,117.70
  6. Step 6: Final answer
    x = 646,713.87

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.