Home / 1,392,040.40-2,088,060.60-857,829.20

Finding the Fourth Proportional to 1,392,040.40, 2,088,060.60 and 857,829.20

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Solution

The fourth proportional to 1,392,040.40, 2,088,060.60 and 857,829.20 is: 1,286,743.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,040.40 : 2,088,060.60 = 857,829.20 : x
  2. Step 2: Convert to fraction form
    1,392,040.40/2,088,060.60 = 857,829.20/x
  3. Step 3: Cross multiply
    1,392,040.40x = 2,088,060.60 × 857,829.20
  4. Step 4: Simplify right side
    1,392,040.40x = 1,791,199,354,049.52
  5. Step 5: Solve for x
    x = 1,791,199,354,049.52/1,392,040.40
  6. Step 6: Final answer
    x = 1,286,743.80

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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.