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Finding the Fourth Proportional to 622,851.60, 933,694.20 and 487,840.80

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Solution

The fourth proportional to 622,851.60, 933,694.20 and 487,840.80 is: 731,304.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,851.60 : 933,694.20 = 487,840.80 : x
  2. Step 2: Convert to fraction form
    622,851.60/933,694.20 = 487,840.80/x
  3. Step 3: Cross multiply
    622,851.60x = 933,694.20 × 487,840.80
  4. Step 4: Simplify right side
    622,851.60x = 455,494,125,483.36
  5. Step 5: Solve for x
    x = 455,494,125,483.36/622,851.60
  6. Step 6: Final answer
    x = 731,304.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.