Home / 861,340.20-1,292,285.70-262,415.40

Finding the Fourth Proportional to 861,340.20, 1,292,285.70 and 262,415.40

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Solution

The fourth proportional to 861,340.20, 1,292,285.70 and 262,415.40 is: 393,707.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,340.20 : 1,292,285.70 = 262,415.40 : x
  2. Step 2: Convert to fraction form
    861,340.20/1,292,285.70 = 262,415.40/x
  3. Step 3: Cross multiply
    861,340.20x = 1,292,285.70 × 262,415.40
  4. Step 4: Simplify right side
    861,340.20x = 339,115,668,879.78
  5. Step 5: Solve for x
    x = 339,115,668,879.78/861,340.20
  6. Step 6: Final answer
    x = 393,707.00

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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.