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Finding the Fourth Proportional to 587,321.70, 880,982.55 and 487,680.90

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Solution

The fourth proportional to 587,321.70, 880,982.55 and 487,680.90 is: 731,521.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,321.70 : 880,982.55 = 487,680.90 : x
  2. Step 2: Convert to fraction form
    587,321.70/880,982.55 = 487,680.90/x
  3. Step 3: Cross multiply
    587,321.70x = 880,982.55 × 487,680.90
  4. Step 4: Simplify right side
    587,321.70x = 429,638,362,868.30
  5. Step 5: Solve for x
    x = 429,638,362,868.30/587,321.70
  6. Step 6: Final answer
    x = 731,521.35

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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.