Home / 836,947.90-1,155,543.96-643,009.96

Finding the Fourth Proportional to 836,947.90, 1,155,543.96 and 643,009.96

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Solution

The fourth proportional to 836,947.90, 1,155,543.96 and 643,009.96 is: 887,780.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,947.90 : 1,155,543.96 = 643,009.96 : x
  2. Step 2: Convert to fraction form
    836,947.90/1,155,543.96 = 643,009.96/x
  3. Step 3: Cross multiply
    836,947.90x = 1,155,543.96 × 643,009.96
  4. Step 4: Simplify right side
    836,947.90x = 743,026,275,497.84
  5. Step 5: Solve for x
    x = 743,026,275,497.84/836,947.90
  6. Step 6: Final answer
    x = 887,780.80

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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.