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Finding the Fourth Proportional to 663,987.76, 916,306.01 and 362,188.24

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Solution

The fourth proportional to 663,987.76, 916,306.01 and 362,188.24 is: 499,821.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,987.76 : 916,306.01 = 362,188.24 : x
  2. Step 2: Convert to fraction form
    663,987.76/916,306.01 = 362,188.24/x
  3. Step 3: Cross multiply
    663,987.76x = 916,306.01 × 362,188.24
  4. Step 4: Simplify right side
    663,987.76x = 331,875,261,063.32
  5. Step 5: Solve for x
    x = 331,875,261,063.32/663,987.76
  6. Step 6: Final answer
    x = 499,821.35

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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.