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Finding the Fourth Proportional to 488,865.32, 674,122.50 and 361,807.40

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Solution

The fourth proportional to 488,865.32, 674,122.50 and 361,807.40 is: 498,915.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,865.32 : 674,122.50 = 361,807.40 : x
  2. Step 2: Convert to fraction form
    488,865.32/674,122.50 = 361,807.40/x
  3. Step 3: Cross multiply
    488,865.32x = 674,122.50 × 361,807.40
  4. Step 4: Simplify right side
    488,865.32x = 243,902,509,006.50
  5. Step 5: Solve for x
    x = 243,902,509,006.50/488,865.32
  6. Step 6: Final answer
    x = 498,915.55

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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.