Home / 638,046.09-879,912.00-465,691.24

Finding the Fourth Proportional to 638,046.09, 879,912.00 and 465,691.24

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Solution

The fourth proportional to 638,046.09, 879,912.00 and 465,691.24 is: 642,222.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,046.09 : 879,912.00 = 465,691.24 : x
  2. Step 2: Convert to fraction form
    638,046.09/879,912.00 = 465,691.24/x
  3. Step 3: Cross multiply
    638,046.09x = 879,912.00 × 465,691.24
  4. Step 4: Simplify right side
    638,046.09x = 409,767,307,103.76
  5. Step 5: Solve for x
    x = 409,767,307,103.76/638,046.09
  6. Step 6: Final answer
    x = 642,222.11

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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.