Home / 866,130.30-1,299,195.45-547,265.70

Finding the Fourth Proportional to 866,130.30, 1,299,195.45 and 547,265.70

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Solution

The fourth proportional to 866,130.30, 1,299,195.45 and 547,265.70 is: 820,898.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,130.30 : 1,299,195.45 = 547,265.70 : x
  2. Step 2: Convert to fraction form
    866,130.30/1,299,195.45 = 547,265.70/x
  3. Step 3: Cross multiply
    866,130.30x = 1,299,195.45 × 547,265.70
  4. Step 4: Simplify right side
    866,130.30x = 711,005,107,381.07
  5. Step 5: Solve for x
    x = 711,005,107,381.07/866,130.30
  6. Step 6: Final answer
    x = 820,898.55

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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.