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Finding the Fourth Proportional to 330,784,689.60, 496,177,034.40 and 279,128,624.40

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Solution

The fourth proportional to 330,784,689.60, 496,177,034.40 and 279,128,624.40 is: 418,692,936.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,784,689.60 : 496,177,034.40 = 279,128,624.40 : x
  2. Step 2: Convert to fraction form
    330,784,689.60/496,177,034.40 = 279,128,624.40/x
  3. Step 3: Cross multiply
    330,784,689.60x = 496,177,034.40 × 279,128,624.40
  4. Step 4: Simplify right side
    330,784,689.60x = 138,497,213,070,943,456
  5. Step 5: Solve for x
    x = 138,497,213,070,943,456/330,784,689.60
  6. Step 6: Final answer
    x = 418,692,936.60

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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.