Home / 639,045.35-957,839.13-399,269.51

Finding the Fourth Proportional to 639,045.35, 957,839.13 and 399,269.51

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Solution

The fourth proportional to 639,045.35, 957,839.13 and 399,269.51 is: 598,448.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,045.35 : 957,839.13 = 399,269.51 : x
  2. Step 2: Convert to fraction form
    639,045.35/957,839.13 = 399,269.51/x
  3. Step 3: Cross multiply
    639,045.35x = 957,839.13 × 399,269.51
  4. Step 4: Simplify right side
    639,045.35x = 382,435,960,093.93
  5. Step 5: Solve for x
    x = 382,435,960,093.93/639,045.35
  6. Step 6: Final answer
    x = 598,448.86

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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.