Home / 658,020.10-987,260.55-284,311.30

Finding the Fourth Proportional to 658,020.10, 987,260.55 and 284,311.30

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Solution

The fourth proportional to 658,020.10, 987,260.55 and 284,311.30 is: 426,566.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,020.10 : 987,260.55 = 284,311.30 : x
  2. Step 2: Convert to fraction form
    658,020.10/987,260.55 = 284,311.30/x
  3. Step 3: Cross multiply
    658,020.10x = 987,260.55 × 284,311.30
  4. Step 4: Simplify right side
    658,020.10x = 280,689,330,409.22
  5. Step 5: Solve for x
    x = 280,689,330,409.22/658,020.10
  6. Step 6: Final answer
    x = 426,566.50

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Half scale
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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.