Home / 638,512,432.80-957,910,366.80-293,382,837.60

Finding the Fourth Proportional to 638,512,432.80, 957,910,366.80 and 293,382,837.60

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Solution

The fourth proportional to 638,512,432.80, 957,910,366.80 and 293,382,837.60 is: 440,139,372.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,512,432.80 : 957,910,366.80 = 293,382,837.60 : x
  2. Step 2: Convert to fraction form
    638,512,432.80/957,910,366.80 = 293,382,837.60/x
  3. Step 3: Cross multiply
    638,512,432.80x = 957,910,366.80 × 293,382,837.60
  4. Step 4: Simplify right side
    638,512,432.80x = 281,034,461,578,240,832
  5. Step 5: Solve for x
    x = 281,034,461,578,240,832/638,512,432.80
  6. Step 6: Final answer
    x = 440,139,372.61

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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.