Home / 658,117.20-987,175.80-342,533.10

Finding the Fourth Proportional to 658,117.20, 987,175.80 and 342,533.10

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Solution

The fourth proportional to 658,117.20, 987,175.80 and 342,533.10 is: 513,799.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,117.20 : 987,175.80 = 342,533.10 : x
  2. Step 2: Convert to fraction form
    658,117.20/987,175.80 = 342,533.10/x
  3. Step 3: Cross multiply
    658,117.20x = 987,175.80 × 342,533.10
  4. Step 4: Simplify right side
    658,117.20x = 338,140,387,018.98
  5. Step 5: Solve for x
    x = 338,140,387,018.98/658,117.20
  6. Step 6: Final answer
    x = 513,799.65

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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.