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Finding the Fourth Proportional to 571,006.80, 856,510.20 and 359,960.40

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Solution

The fourth proportional to 571,006.80, 856,510.20 and 359,960.40 is: 539,940.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,006.80 : 856,510.20 = 359,960.40 : x
  2. Step 2: Convert to fraction form
    571,006.80/856,510.20 = 359,960.40/x
  3. Step 3: Cross multiply
    571,006.80x = 856,510.20 × 359,960.40
  4. Step 4: Simplify right side
    571,006.80x = 308,309,754,196.08
  5. Step 5: Solve for x
    x = 308,309,754,196.08/571,006.80
  6. Step 6: Final answer
    x = 539,940.60

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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.