Home / 915,736.10-1,262,259.38-721,829.40

Finding the Fourth Proportional to 915,736.10, 1,262,259.38 and 721,829.40

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Solution

The fourth proportional to 915,736.10, 1,262,259.38 and 721,829.40 is: 994,976.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,736.10 : 1,262,259.38 = 721,829.40 : x
  2. Step 2: Convert to fraction form
    915,736.10/1,262,259.38 = 721,829.40/x
  3. Step 3: Cross multiply
    915,736.10x = 1,262,259.38 × 721,829.40
  4. Step 4: Simplify right side
    915,736.10x = 911,135,930,909.77
  5. Step 5: Solve for x
    x = 911,135,930,909.77/915,736.10
  6. Step 6: Final answer
    x = 994,976.53

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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.