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Finding the Fourth Proportional to 571,027.80, 856,541.70 and 359,981.40

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Solution

The fourth proportional to 571,027.80, 856,541.70 and 359,981.40 is: 539,972.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,027.80 : 856,541.70 = 359,981.40 : x
  2. Step 2: Convert to fraction form
    571,027.80/856,541.70 = 359,981.40/x
  3. Step 3: Cross multiply
    571,027.80x = 856,541.70 × 359,981.40
  4. Step 4: Simplify right side
    571,027.80x = 308,339,080,324.38
  5. Step 5: Solve for x
    x = 308,339,080,324.38/571,027.80
  6. Step 6: Final answer
    x = 539,972.10

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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.