Home / 839,635.20-1,259,841.60-440,726.40

Finding the Fourth Proportional to 839,635.20, 1,259,841.60 and 440,726.40

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Solution

The fourth proportional to 839,635.20, 1,259,841.60 and 440,726.40 is: 661,293.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,635.20 : 1,259,841.60 = 440,726.40 : x
  2. Step 2: Convert to fraction form
    839,635.20/1,259,841.60 = 440,726.40/x
  3. Step 3: Cross multiply
    839,635.20x = 1,259,841.60 × 440,726.40
  4. Step 4: Simplify right side
    839,635.20x = 555,245,452,938.24
  5. Step 5: Solve for x
    x = 555,245,452,938.24/839,635.20
  6. Step 6: Final answer
    x = 661,293.68

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Similar ratio
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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.