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Finding the Fourth Proportional to 532,866.40, 799,299.60 and 489,320.80

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Solution

The fourth proportional to 532,866.40, 799,299.60 and 489,320.80 is: 733,981.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,866.40 : 799,299.60 = 489,320.80 : x
  2. Step 2: Convert to fraction form
    532,866.40/799,299.60 = 489,320.80/x
  3. Step 3: Cross multiply
    532,866.40x = 799,299.60 × 489,320.80
  4. Step 4: Simplify right side
    532,866.40x = 391,113,919,711.68
  5. Step 5: Solve for x
    x = 391,113,919,711.68/532,866.40
  6. Step 6: Final answer
    x = 733,981.20

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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.