Home / 752,428.32-1,038,351.60-412,915.20

Finding the Fourth Proportional to 752,428.32, 1,038,351.60 and 412,915.20

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Solution

The fourth proportional to 752,428.32, 1,038,351.60 and 412,915.20 is: 569,823.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,428.32 : 1,038,351.60 = 412,915.20 : x
  2. Step 2: Convert to fraction form
    752,428.32/1,038,351.60 = 412,915.20/x
  3. Step 3: Cross multiply
    752,428.32x = 1,038,351.60 × 412,915.20
  4. Step 4: Simplify right side
    752,428.32x = 428,751,158,584.32
  5. Step 5: Solve for x
    x = 428,751,158,584.32/752,428.32
  6. Step 6: Final answer
    x = 569,823.26

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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.