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Finding the Fourth Proportional to 752,611.74, 1,038,604.74 and 408,447.57

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Solution

The fourth proportional to 752,611.74, 1,038,604.74 and 408,447.57 is: 563,657.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,611.74 : 1,038,604.74 = 408,447.57 : x
  2. Step 2: Convert to fraction form
    752,611.74/1,038,604.74 = 408,447.57/x
  3. Step 3: Cross multiply
    752,611.74x = 1,038,604.74 × 408,447.57
  4. Step 4: Simplify right side
    752,611.74x = 424,215,584,606.57
  5. Step 5: Solve for x
    x = 424,215,584,606.57/752,611.74
  6. Step 6: Final answer
    x = 563,657.94

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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.