Home / 805,895.80-1,207,385.70-638,517.40

Finding the Fourth Proportional to 805,895.80, 1,207,385.70 and 638,517.40

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Solution

The fourth proportional to 805,895.80, 1,207,385.70 and 638,517.40 is: 956,620.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,895.80 : 1,207,385.70 = 638,517.40 : x
  2. Step 2: Convert to fraction form
    805,895.80/1,207,385.70 = 638,517.40/x
  3. Step 3: Cross multiply
    805,895.80x = 1,207,385.70 × 638,517.40
  4. Step 4: Simplify right side
    805,895.80x = 770,936,777,961.18
  5. Step 5: Solve for x
    x = 770,936,777,961.18/805,895.80
  6. Step 6: Final answer
    x = 956,620.92

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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.