Home / 860,947.36-1,188,385.76-770,143.12

Finding the Fourth Proportional to 860,947.36, 1,188,385.76 and 770,143.12

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Solution

The fourth proportional to 860,947.36, 1,188,385.76 and 770,143.12 is: 1,063,046.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,947.36 : 1,188,385.76 = 770,143.12 : x
  2. Step 2: Convert to fraction form
    860,947.36/1,188,385.76 = 770,143.12/x
  3. Step 3: Cross multiply
    860,947.36x = 1,188,385.76 × 770,143.12
  4. Step 4: Simplify right side
    860,947.36x = 915,227,116,969.97
  5. Step 5: Solve for x
    x = 915,227,116,969.97/860,947.36
  6. Step 6: Final answer
    x = 1,063,046.55

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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.