Home / 439,862.21-657,064.13-318,959.38

Finding the Fourth Proportional to 439,862.21, 657,064.13 and 318,959.38

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Solution

The fourth proportional to 439,862.21, 657,064.13 and 318,959.38 is: 476,460.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,862.21 : 657,064.13 = 318,959.38 : x
  2. Step 2: Convert to fraction form
    439,862.21/657,064.13 = 318,959.38/x
  3. Step 3: Cross multiply
    439,862.21x = 657,064.13 × 318,959.38
  4. Step 4: Simplify right side
    439,862.21x = 209,576,766,751.57
  5. Step 5: Solve for x
    x = 209,576,766,751.57/439,862.21
  6. Step 6: Final answer
    x = 476,460.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.