Home / 639,045.36-957,839.13-399,269.50

Finding the Fourth Proportional to 639,045.36, 957,839.13 and 399,269.50

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Solution

The fourth proportional to 639,045.36, 957,839.13 and 399,269.50 is: 598,448.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,045.36 : 957,839.13 = 399,269.50 : x
  2. Step 2: Convert to fraction form
    639,045.36/957,839.13 = 399,269.50/x
  3. Step 3: Cross multiply
    639,045.36x = 957,839.13 × 399,269.50
  4. Step 4: Simplify right side
    639,045.36x = 382,435,950,515.54
  5. Step 5: Solve for x
    x = 382,435,950,515.54/639,045.36
  6. Step 6: Final answer
    x = 598,448.83

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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.