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Finding the Fourth Proportional to 532,890.40, 799,335.60 and 489,344.80

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Solution

The fourth proportional to 532,890.40, 799,335.60 and 489,344.80 is: 734,017.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,890.40 : 799,335.60 = 489,344.80 : x
  2. Step 2: Convert to fraction form
    532,890.40/799,335.60 = 489,344.80/x
  3. Step 3: Cross multiply
    532,890.40x = 799,335.60 × 489,344.80
  4. Step 4: Simplify right side
    532,890.40x = 391,150,719,314.88
  5. Step 5: Solve for x
    x = 391,150,719,314.88/532,890.40
  6. Step 6: Final answer
    x = 734,017.20

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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.