Home / 658,114.20-987,171.30-342,530.10

Finding the Fourth Proportional to 658,114.20, 987,171.30 and 342,530.10

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Solution

The fourth proportional to 658,114.20, 987,171.30 and 342,530.10 is: 513,795.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,114.20 : 987,171.30 = 342,530.10 : x
  2. Step 2: Convert to fraction form
    658,114.20/987,171.30 = 342,530.10/x
  3. Step 3: Cross multiply
    658,114.20x = 987,171.30 × 342,530.10
  4. Step 4: Simplify right side
    658,114.20x = 338,135,884,106.13
  5. Step 5: Solve for x
    x = 338,135,884,106.13/658,114.20
  6. Step 6: Final answer
    x = 513,795.15

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Double scale
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Similar ratio
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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.