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Finding the Fourth Proportional to 752,711.16, 1,038,728.37 and 408,539.71

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Solution

The fourth proportional to 752,711.16, 1,038,728.37 and 408,539.71 is: 563,777.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,711.16 : 1,038,728.37 = 408,539.71 : x
  2. Step 2: Convert to fraction form
    752,711.16/1,038,728.37 = 408,539.71/x
  3. Step 3: Cross multiply
    752,711.16x = 1,038,728.37 × 408,539.71
  4. Step 4: Simplify right side
    752,711.16x = 424,361,782,416.47
  5. Step 5: Solve for x
    x = 424,361,782,416.47/752,711.16
  6. Step 6: Final answer
    x = 563,777.72

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.