Home / 1,120,764.60-1,681,146.90-921,310.20

Finding the Fourth Proportional to 1,120,764.60, 1,681,146.90 and 921,310.20

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Solution

The fourth proportional to 1,120,764.60, 1,681,146.90 and 921,310.20 is: 1,381,965.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,764.60 : 1,681,146.90 = 921,310.20 : x
  2. Step 2: Convert to fraction form
    1,120,764.60/1,681,146.90 = 921,310.20/x
  3. Step 3: Cross multiply
    1,120,764.60x = 1,681,146.90 × 921,310.20
  4. Step 4: Simplify right side
    1,120,764.60x = 1,548,857,786,668.38
  5. Step 5: Solve for x
    x = 1,548,857,786,668.38/1,120,764.60
  6. Step 6: Final answer
    x = 1,381,965.30

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Double scale
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Similar ratio
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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.