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Finding the Fourth Proportional to 571,251.70, 856,877.55 and 480,013.30

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Solution

The fourth proportional to 571,251.70, 856,877.55 and 480,013.30 is: 720,019.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,251.70 : 856,877.55 = 480,013.30 : x
  2. Step 2: Convert to fraction form
    571,251.70/856,877.55 = 480,013.30/x
  3. Step 3: Cross multiply
    571,251.70x = 856,877.55 × 480,013.30
  4. Step 4: Simplify right side
    571,251.70x = 411,312,620,471.42
  5. Step 5: Solve for x
    x = 411,312,620,471.42/571,251.70
  6. Step 6: Final answer
    x = 720,019.95

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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.