Home / 809,437-1,115,984.64-663,705.85

Finding the Fourth Proportional to 809,437, 1,115,984.64 and 663,705.85

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Solution

The fourth proportional to 809,437, 1,115,984.64 and 663,705.85 is: 915,062.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,437 : 1,115,984.64 = 663,705.85 : x
  2. Step 2: Convert to fraction form
    809,437/1,115,984.64 = 663,705.85/x
  3. Step 3: Cross multiply
    809,437x = 1,115,984.64 × 663,705.85
  4. Step 4: Simplify right side
    809,437x = 740,685,534,078.14
  5. Step 5: Solve for x
    x = 740,685,534,078.14/809,437
  6. Step 6: Final answer
    x = 915,062.61

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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.