Home / 840,640.60-1,259,575.80-485,034.40

Finding the Fourth Proportional to 840,640.60, 1,259,575.80 and 485,034.40

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Solution

The fourth proportional to 840,640.60, 1,259,575.80 and 485,034.40 is: 726,752.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,640.60 : 1,259,575.80 = 485,034.40 : x
  2. Step 2: Convert to fraction form
    840,640.60/1,259,575.80 = 485,034.40/x
  3. Step 3: Cross multiply
    840,640.60x = 1,259,575.80 × 485,034.40
  4. Step 4: Simplify right side
    840,640.60x = 610,937,592,407.52
  5. Step 5: Solve for x
    x = 610,937,592,407.52/840,640.60
  6. Step 6: Final answer
    x = 726,752.42

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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.