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Finding the Fourth Proportional to 553,321,842.71, 763,936,306.58 and 344,784,348.95

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Solution

The fourth proportional to 553,321,842.71, 763,936,306.58 and 344,784,348.95 is: 476,021,840.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,321,842.71 : 763,936,306.58 = 344,784,348.95 : x
  2. Step 2: Convert to fraction form
    553,321,842.71/763,936,306.58 = 344,784,348.95/x
  3. Step 3: Cross multiply
    553,321,842.71x = 763,936,306.58 × 344,784,348.95
  4. Step 4: Simplify right side
    553,321,842.71x = 263,393,282,103,452,896
  5. Step 5: Solve for x
    x = 263,393,282,103,452,896/553,321,842.71
  6. Step 6: Final answer
    x = 476,021,840.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.