Home / 781,002.86-1,170,166.97-426,265.79

Finding the Fourth Proportional to 781,002.86, 1,170,166.97 and 426,265.79

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Solution

The fourth proportional to 781,002.86, 1,170,166.97 and 426,265.79 is: 638,668.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,002.86 : 1,170,166.97 = 426,265.79 : x
  2. Step 2: Convert to fraction form
    781,002.86/1,170,166.97 = 426,265.79/x
  3. Step 3: Cross multiply
    781,002.86x = 1,170,166.97 × 426,265.79
  4. Step 4: Simplify right side
    781,002.86x = 498,802,143,113.79
  5. Step 5: Solve for x
    x = 498,802,143,113.79/781,002.86
  6. Step 6: Final answer
    x = 638,668.78

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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.