Home / 639,045.47-957,839.32-399,269.63

Finding the Fourth Proportional to 639,045.47, 957,839.32 and 399,269.63

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Solution

The fourth proportional to 639,045.47, 957,839.32 and 399,269.63 is: 598,449.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,045.47 : 957,839.32 = 399,269.63 : x
  2. Step 2: Convert to fraction form
    639,045.47/957,839.32 = 399,269.63/x
  3. Step 3: Cross multiply
    639,045.47x = 957,839.32 × 399,269.63
  4. Step 4: Simplify right side
    639,045.47x = 382,436,153,789.54
  5. Step 5: Solve for x
    x = 382,436,153,789.54/639,045.47
  6. Step 6: Final answer
    x = 598,449.05

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1.5x scale

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.