Home / 782,053.18-1,078,676.85-717,730.17

Finding the Fourth Proportional to 782,053.18, 1,078,676.85 and 717,730.17

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Solution

The fourth proportional to 782,053.18, 1,078,676.85 and 717,730.17 is: 989,956.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,053.18 : 1,078,676.85 = 717,730.17 : x
  2. Step 2: Convert to fraction form
    782,053.18/1,078,676.85 = 717,730.17/x
  3. Step 3: Cross multiply
    782,053.18x = 1,078,676.85 × 717,730.17
  4. Step 4: Simplify right side
    782,053.18x = 774,198,913,534.78
  5. Step 5: Solve for x
    x = 774,198,913,534.78/782,053.18
  6. Step 6: Final answer
    x = 989,956.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.