Home / 918,769.32-1,268,290.50-861,376.68

Finding the Fourth Proportional to 918,769.32, 1,268,290.50 and 861,376.68

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Solution

The fourth proportional to 918,769.32, 1,268,290.50 and 861,376.68 is: 1,189,064.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,769.32 : 1,268,290.50 = 861,376.68 : x
  2. Step 2: Convert to fraction form
    918,769.32/1,268,290.50 = 861,376.68/x
  3. Step 3: Cross multiply
    918,769.32x = 1,268,290.50 × 861,376.68
  4. Step 4: Simplify right side
    918,769.32x = 1,092,475,860,165.54
  5. Step 5: Solve for x
    x = 1,092,475,860,165.54/918,769.32
  6. Step 6: Final answer
    x = 1,189,064.37

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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.