Home / 865,963.40-1,298,945.10-266,871.20

Finding the Fourth Proportional to 865,963.40, 1,298,945.10 and 266,871.20

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Solution

The fourth proportional to 865,963.40, 1,298,945.10 and 266,871.20 is: 400,306.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,963.40 : 1,298,945.10 = 266,871.20 : x
  2. Step 2: Convert to fraction form
    865,963.40/1,298,945.10 = 266,871.20/x
  3. Step 3: Cross multiply
    865,963.40x = 1,298,945.10 × 266,871.20
  4. Step 4: Simplify right side
    865,963.40x = 346,651,037,571.12
  5. Step 5: Solve for x
    x = 346,651,037,571.12/865,963.40
  6. Step 6: Final answer
    x = 400,306.80

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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.