Home / 815,970.38-1,126,718.93-680,713.32

Finding the Fourth Proportional to 815,970.38, 1,126,718.93 and 680,713.32

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Solution

The fourth proportional to 815,970.38, 1,126,718.93 and 680,713.32 is: 939,951.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,970.38 : 1,126,718.93 = 680,713.32 : x
  2. Step 2: Convert to fraction form
    815,970.38/1,126,718.93 = 680,713.32/x
  3. Step 3: Cross multiply
    815,970.38x = 1,126,718.93 × 680,713.32
  4. Step 4: Simplify right side
    815,970.38x = 766,972,580,143.58
  5. Step 5: Solve for x
    x = 766,972,580,143.58/815,970.38
  6. Step 6: Final answer
    x = 939,951.50

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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.