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Finding the Fourth Proportional to 682,793.60, 1,024,190.40 and 430,851.20

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Solution

The fourth proportional to 682,793.60, 1,024,190.40 and 430,851.20 is: 646,276.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,793.60 : 1,024,190.40 = 430,851.20 : x
  2. Step 2: Convert to fraction form
    682,793.60/1,024,190.40 = 430,851.20/x
  3. Step 3: Cross multiply
    682,793.60x = 1,024,190.40 × 430,851.20
  4. Step 4: Simplify right side
    682,793.60x = 441,273,662,868.48
  5. Step 5: Solve for x
    x = 441,273,662,868.48/682,793.60
  6. Step 6: Final answer
    x = 646,276.80

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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.