Home / 865,421.55-1,298,273.27-266,382.81

Finding the Fourth Proportional to 865,421.55, 1,298,273.27 and 266,382.81

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Solution

The fourth proportional to 865,421.55, 1,298,273.27 and 266,382.81 is: 399,617.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,421.55 : 1,298,273.27 = 266,382.81 : x
  2. Step 2: Convert to fraction form
    865,421.55/1,298,273.27 = 266,382.81/x
  3. Step 3: Cross multiply
    865,421.55x = 1,298,273.27 × 266,382.81
  4. Step 4: Simplify right side
    865,421.55x = 345,837,680,478.58
  5. Step 5: Solve for x
    x = 345,837,680,478.58/865,421.55
  6. Step 6: Final answer
    x = 399,617.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.