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Finding the Fourth Proportional to 632,385.84, 872,682.88 and 377,687.76

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Solution

The fourth proportional to 632,385.84, 872,682.88 and 377,687.76 is: 521,203.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,385.84 : 872,682.88 = 377,687.76 : x
  2. Step 2: Convert to fraction form
    632,385.84/872,682.88 = 377,687.76/x
  3. Step 3: Cross multiply
    632,385.84x = 872,682.88 × 377,687.76
  4. Step 4: Simplify right side
    632,385.84x = 329,601,642,137.55
  5. Step 5: Solve for x
    x = 329,601,642,137.55/632,385.84
  6. Step 6: Final answer
    x = 521,203.39

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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.