Home / 732,141.80-1,098,212.70-311,431.40

Finding the Fourth Proportional to 732,141.80, 1,098,212.70 and 311,431.40

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Solution

The fourth proportional to 732,141.80, 1,098,212.70 and 311,431.40 is: 467,147.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    732,141.80 : 1,098,212.70 = 311,431.40 : x
  2. Step 2: Convert to fraction form
    732,141.80/1,098,212.70 = 311,431.40/x
  3. Step 3: Cross multiply
    732,141.80x = 1,098,212.70 × 311,431.40
  4. Step 4: Simplify right side
    732,141.80x = 342,017,918,658.78
  5. Step 5: Solve for x
    x = 342,017,918,658.78/732,141.80
  6. Step 6: Final answer
    x = 467,147.10

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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.