Home / 812,117.60-1,218,176.40-560,175.20

Finding the Fourth Proportional to 812,117.60, 1,218,176.40 and 560,175.20

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Solution

The fourth proportional to 812,117.60, 1,218,176.40 and 560,175.20 is: 840,262.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,117.60 : 1,218,176.40 = 560,175.20 : x
  2. Step 2: Convert to fraction form
    812,117.60/1,218,176.40 = 560,175.20/x
  3. Step 3: Cross multiply
    812,117.60x = 1,218,176.40 × 560,175.20
  4. Step 4: Simplify right side
    812,117.60x = 682,392,208,505.28
  5. Step 5: Solve for x
    x = 682,392,208,505.28/812,117.60
  6. Step 6: Final answer
    x = 840,262.80

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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.