Home / 638,001.38-880,441.20-351,521.39

Finding the Fourth Proportional to 638,001.38, 880,441.20 and 351,521.39

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Solution

The fourth proportional to 638,001.38, 880,441.20 and 351,521.39 is: 485,099.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,001.38 : 880,441.20 = 351,521.39 : x
  2. Step 2: Convert to fraction form
    638,001.38/880,441.20 = 351,521.39/x
  3. Step 3: Cross multiply
    638,001.38x = 880,441.20 × 351,521.39
  4. Step 4: Simplify right side
    638,001.38x = 309,493,916,638.37
  5. Step 5: Solve for x
    x = 309,493,916,638.37/638,001.38
  6. Step 6: Final answer
    x = 485,099.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.