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Finding the Fourth Proportional to 643,453.52, 888,044.58 and 371,520.95

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Solution

The fourth proportional to 643,453.52, 888,044.58 and 371,520.95 is: 512,744.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,453.52 : 888,044.58 = 371,520.95 : x
  2. Step 2: Convert to fraction form
    643,453.52/888,044.58 = 371,520.95/x
  3. Step 3: Cross multiply
    643,453.52x = 888,044.58 × 371,520.95
  4. Step 4: Simplify right side
    643,453.52x = 329,927,161,563.73
  5. Step 5: Solve for x
    x = 329,927,161,563.73/643,453.52
  6. Step 6: Final answer
    x = 512,744.36

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Double scale
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1.5x scale

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.