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Finding the Fourth Proportional to 675,095.20, 1,012,351.20 and 338,005.60

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Solution

The fourth proportional to 675,095.20, 1,012,351.20 and 338,005.60 is: 506,862.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,095.20 : 1,012,351.20 = 338,005.60 : x
  2. Step 2: Convert to fraction form
    675,095.20/1,012,351.20 = 338,005.60/x
  3. Step 3: Cross multiply
    675,095.20x = 1,012,351.20 × 338,005.60
  4. Step 4: Simplify right side
    675,095.20x = 342,180,374,766.72
  5. Step 5: Solve for x
    x = 342,180,374,766.72/675,095.20
  6. Step 6: Final answer
    x = 506,862.40

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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.