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Finding the Fourth Proportional to 622,883.60, 932,357.10 and 489,039.20

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Solution

The fourth proportional to 622,883.60, 932,357.10 and 489,039.20 is: 732,013.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,883.60 : 932,357.10 = 489,039.20 : x
  2. Step 2: Convert to fraction form
    622,883.60/932,357.10 = 489,039.20/x
  3. Step 3: Cross multiply
    622,883.60x = 932,357.10 × 489,039.20
  4. Step 4: Simplify right side
    622,883.60x = 455,959,170,298.32
  5. Step 5: Solve for x
    x = 455,959,170,298.32/622,883.60
  6. Step 6: Final answer
    x = 732,013.45

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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.