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Finding the Fourth Proportional to 680,132.36, 938,483.60 and 408,142.48

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Solution

The fourth proportional to 680,132.36, 938,483.60 and 408,142.48 is: 563,177.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,132.36 : 938,483.60 = 408,142.48 : x
  2. Step 2: Convert to fraction form
    680,132.36/938,483.60 = 408,142.48/x
  3. Step 3: Cross multiply
    680,132.36x = 938,483.60 × 408,142.48
  4. Step 4: Simplify right side
    680,132.36x = 383,035,023,943.33
  5. Step 5: Solve for x
    x = 383,035,023,943.33/680,132.36
  6. Step 6: Final answer
    x = 563,177.18

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1.5x scale

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.