Home / 861,310.20-1,292,240.70-262,385.40

Finding the Fourth Proportional to 861,310.20, 1,292,240.70 and 262,385.40

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Solution

The fourth proportional to 861,310.20, 1,292,240.70 and 262,385.40 is: 393,662.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,310.20 : 1,292,240.70 = 262,385.40 : x
  2. Step 2: Convert to fraction form
    861,310.20/1,292,240.70 = 262,385.40/x
  3. Step 3: Cross multiply
    861,310.20x = 1,292,240.70 × 262,385.40
  4. Step 4: Simplify right side
    861,310.20x = 339,065,092,965.78
  5. Step 5: Solve for x
    x = 339,065,092,965.78/861,310.20
  6. Step 6: Final answer
    x = 393,662.00

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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.