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Finding the Fourth Proportional to 553,321,834.71, 763,936,295.54 and 344,784,340.95

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Solution

The fourth proportional to 553,321,834.71, 763,936,295.54 and 344,784,340.95 is: 476,021,829.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,321,834.71 : 763,936,295.54 = 344,784,340.95 : x
  2. Step 2: Convert to fraction form
    553,321,834.71/763,936,295.54 = 344,784,340.95/x
  3. Step 3: Cross multiply
    553,321,834.71x = 763,936,295.54 × 344,784,340.95
  4. Step 4: Simplify right side
    553,321,834.71x = 263,393,272,183,819,392
  5. Step 5: Solve for x
    x = 263,393,272,183,819,392/553,321,834.71
  6. Step 6: Final answer
    x = 476,021,829.72

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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.