Home / 1,235,139.20-1,852,708.80-811,353.28

Finding the Fourth Proportional to 1,235,139.20, 1,852,708.80 and 811,353.28

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Solution

The fourth proportional to 1,235,139.20, 1,852,708.80 and 811,353.28 is: 1,217,029.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235,139.20 : 1,852,708.80 = 811,353.28 : x
  2. Step 2: Convert to fraction form
    1,235,139.20/1,852,708.80 = 811,353.28/x
  3. Step 3: Cross multiply
    1,235,139.20x = 1,852,708.80 × 811,353.28
  4. Step 4: Simplify right side
    1,235,139.20x = 1,503,201,361,764.86
  5. Step 5: Solve for x
    x = 1,503,201,361,764.86/1,235,139.20
  6. Step 6: Final answer
    x = 1,217,029.92

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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.