Home / 782,279.98-1,079,361.32-442,748.23

Finding the Fourth Proportional to 782,279.98, 1,079,361.32 and 442,748.23

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Solution

The fourth proportional to 782,279.98, 1,079,361.32 and 442,748.23 is: 610,887.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,279.98 : 1,079,361.32 = 442,748.23 : x
  2. Step 2: Convert to fraction form
    782,279.98/1,079,361.32 = 442,748.23/x
  3. Step 3: Cross multiply
    782,279.98x = 1,079,361.32 × 442,748.23
  4. Step 4: Simplify right side
    782,279.98x = 477,885,309,048.32
  5. Step 5: Solve for x
    x = 477,885,309,048.32/782,279.98
  6. Step 6: Final answer
    x = 610,887.82

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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.