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Finding the Fourth Proportional to 668,156.45, 998,564.58 and 488,618.80

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Solution

The fourth proportional to 668,156.45, 998,564.58 and 488,618.80 is: 730,244.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,156.45 : 998,564.58 = 488,618.80 : x
  2. Step 2: Convert to fraction form
    668,156.45/998,564.58 = 488,618.80/x
  3. Step 3: Cross multiply
    668,156.45x = 998,564.58 × 488,618.80
  4. Step 4: Simplify right side
    668,156.45x = 487,917,424,305.69
  5. Step 5: Solve for x
    x = 487,917,424,305.69/668,156.45
  6. Step 6: Final answer
    x = 730,244.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.