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Finding the Fourth Proportional to 663,175.62, 915,600.42 and 469,993.02

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Solution

The fourth proportional to 663,175.62, 915,600.42 and 469,993.02 is: 648,886.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,175.62 : 915,600.42 = 469,993.02 : x
  2. Step 2: Convert to fraction form
    663,175.62/915,600.42 = 469,993.02/x
  3. Step 3: Cross multiply
    663,175.62x = 915,600.42 × 469,993.02
  4. Step 4: Simplify right side
    663,175.62x = 430,325,806,509.07
  5. Step 5: Solve for x
    x = 430,325,806,509.07/663,175.62
  6. Step 6: Final answer
    x = 648,886.65

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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.