Home / 782,045.40-1,078,666.11-717,722.39

Finding the Fourth Proportional to 782,045.40, 1,078,666.11 and 717,722.39

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Solution

The fourth proportional to 782,045.40, 1,078,666.11 and 717,722.39 is: 989,946.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,045.40 : 1,078,666.11 = 717,722.39 : x
  2. Step 2: Convert to fraction form
    782,045.40/1,078,666.11 = 717,722.39/x
  3. Step 3: Cross multiply
    782,045.40x = 1,078,666.11 × 717,722.39
  4. Step 4: Simplify right side
    782,045.40x = 774,182,813,087.87
  5. Step 5: Solve for x
    x = 774,182,813,087.87/782,045.40
  6. Step 6: Final answer
    x = 989,946.12

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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.