Home / 803,778.40-1,205,891.57-655,419.61

Finding the Fourth Proportional to 803,778.40, 1,205,891.57 and 655,419.61

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Solution

The fourth proportional to 803,778.40, 1,205,891.57 and 655,419.61 is: 983,312.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,778.40 : 1,205,891.57 = 655,419.61 : x
  2. Step 2: Convert to fraction form
    803,778.40/1,205,891.57 = 655,419.61/x
  3. Step 3: Cross multiply
    803,778.40x = 1,205,891.57 × 655,419.61
  4. Step 4: Simplify right side
    803,778.40x = 790,364,982,511.69
  5. Step 5: Solve for x
    x = 790,364,982,511.69/803,778.40
  6. Step 6: Final answer
    x = 983,312.05

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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.