Home / 752,274.57-1,038,120.16-421,125.87

Finding the Fourth Proportional to 752,274.57, 1,038,120.16 and 421,125.87

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Solution

The fourth proportional to 752,274.57, 1,038,120.16 and 421,125.87 is: 581,143.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,274.57 : 1,038,120.16 = 421,125.87 : x
  2. Step 2: Convert to fraction form
    752,274.57/1,038,120.16 = 421,125.87/x
  3. Step 3: Cross multiply
    752,274.57x = 1,038,120.16 × 421,125.87
  4. Step 4: Simplify right side
    752,274.57x = 437,179,259,174.29
  5. Step 5: Solve for x
    x = 437,179,259,174.29/752,274.57
  6. Step 6: Final answer
    x = 581,143.21

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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.