Home / 865,666.20-1,298,638.80-266,627.16

Finding the Fourth Proportional to 865,666.20, 1,298,638.80 and 266,627.16

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Solution

The fourth proportional to 865,666.20, 1,298,638.80 and 266,627.16 is: 399,983.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,666.20 : 1,298,638.80 = 266,627.16 : x
  2. Step 2: Convert to fraction form
    865,666.20/1,298,638.80 = 266,627.16/x
  3. Step 3: Cross multiply
    865,666.20x = 1,298,638.80 × 266,627.16
  4. Step 4: Simplify right side
    865,666.20x = 346,252,375,109.81
  5. Step 5: Solve for x
    x = 346,252,375,109.81/865,666.20
  6. Step 6: Final answer
    x = 399,983.71

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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.