Home / 639,045.11-957,838.76-399,269.25

Finding the Fourth Proportional to 639,045.11, 957,838.76 and 399,269.25

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Solution

The fourth proportional to 639,045.11, 957,838.76 and 399,269.25 is: 598,448.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,045.11 : 957,838.76 = 399,269.25 : x
  2. Step 2: Convert to fraction form
    639,045.11/957,838.76 = 399,269.25/x
  3. Step 3: Cross multiply
    639,045.11x = 957,838.76 × 399,269.25
  4. Step 4: Simplify right side
    639,045.11x = 382,435,561,329.78
  5. Step 5: Solve for x
    x = 382,435,561,329.78/639,045.11
  6. Step 6: Final answer
    x = 598,448.46

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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.