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Finding the Fourth Proportional to 587,213.40, 880,820.10 and 489,235.80

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Solution

The fourth proportional to 587,213.40, 880,820.10 and 489,235.80 is: 733,853.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,213.40 : 880,820.10 = 489,235.80 : x
  2. Step 2: Convert to fraction form
    587,213.40/880,820.10 = 489,235.80/x
  3. Step 3: Cross multiply
    587,213.40x = 880,820.10 × 489,235.80
  4. Step 4: Simplify right side
    587,213.40x = 430,928,726,279.58
  5. Step 5: Solve for x
    x = 430,928,726,279.58/587,213.40
  6. Step 6: Final answer
    x = 733,853.70

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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.