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Finding the Fourth Proportional to 615,925.80, 923,024.70 and 489,781.80

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Solution

The fourth proportional to 615,925.80, 923,024.70 and 489,781.80 is: 733,985.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,925.80 : 923,024.70 = 489,781.80 : x
  2. Step 2: Convert to fraction form
    615,925.80/923,024.70 = 489,781.80/x
  3. Step 3: Cross multiply
    615,925.80x = 923,024.70 × 489,781.80
  4. Step 4: Simplify right side
    615,925.80x = 452,080,699,010.46
  5. Step 5: Solve for x
    x = 452,080,699,010.46/615,925.80
  6. Step 6: Final answer
    x = 733,985.65

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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.