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Finding the Fourth Proportional to 615,653,274.80, 923,485,890.87 and 492,525,710.61

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Solution

The fourth proportional to 615,653,274.80, 923,485,890.87 and 492,525,710.61 is: 738,793,348.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,653,274.80 : 923,485,890.87 = 492,525,710.61 : x
  2. Step 2: Convert to fraction form
    615,653,274.80/923,485,890.87 = 492,525,710.61/x
  3. Step 3: Cross multiply
    615,653,274.80x = 923,485,890.87 × 492,525,710.61
  4. Step 4: Simplify right side
    615,653,274.80x = 454,840,544,639,055,680
  5. Step 5: Solve for x
    x = 454,840,544,639,055,680/615,653,274.80
  6. Step 6: Final answer
    x = 738,793,348.89

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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.