Home / 752,485.60-1,128,728.40-453,887.20

Finding the Fourth Proportional to 752,485.60, 1,128,728.40 and 453,887.20

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Solution

The fourth proportional to 752,485.60, 1,128,728.40 and 453,887.20 is: 680,830.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,485.60 : 1,128,728.40 = 453,887.20 : x
  2. Step 2: Convert to fraction form
    752,485.60/1,128,728.40 = 453,887.20/x
  3. Step 3: Cross multiply
    752,485.60x = 1,128,728.40 × 453,887.20
  4. Step 4: Simplify right side
    752,485.60x = 512,315,373,036.48
  5. Step 5: Solve for x
    x = 512,315,373,036.48/752,485.60
  6. Step 6: Final answer
    x = 680,830.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.