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Finding the Fourth Proportional to 663,179, 915,186.84 and 361,373

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Solution

The fourth proportional to 663,179, 915,186.84 and 361,373 is: 498,694.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,179 : 915,186.84 = 361,373 : x
  2. Step 2: Convert to fraction form
    663,179/915,186.84 = 361,373/x
  3. Step 3: Cross multiply
    663,179x = 915,186.84 × 361,373
  4. Step 4: Simplify right side
    663,179x = 330,723,813,931.32
  5. Step 5: Solve for x
    x = 330,723,813,931.32/663,179
  6. Step 6: Final answer
    x = 498,694.64

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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.