Home / 978,842.30-1,350,811.58-549,131.66

Finding the Fourth Proportional to 978,842.30, 1,350,811.58 and 549,131.66

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Solution

The fourth proportional to 978,842.30, 1,350,811.58 and 549,131.66 is: 757,806.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,842.30 : 1,350,811.58 = 549,131.66 : x
  2. Step 2: Convert to fraction form
    978,842.30/1,350,811.58 = 549,131.66/x
  3. Step 3: Cross multiply
    978,842.30x = 1,350,811.58 × 549,131.66
  4. Step 4: Simplify right side
    978,842.30x = 741,773,399,891.39
  5. Step 5: Solve for x
    x = 741,773,399,891.39/978,842.30
  6. Step 6: Final answer
    x = 757,806.85

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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.