Home / 638,111.01-880,612.05-351,649.65

Finding the Fourth Proportional to 638,111.01, 880,612.05 and 351,649.65

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Solution

The fourth proportional to 638,111.01, 880,612.05 and 351,649.65 is: 485,286.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,111.01 : 880,612.05 = 351,649.65 : x
  2. Step 2: Convert to fraction form
    638,111.01/880,612.05 = 351,649.65/x
  3. Step 3: Cross multiply
    638,111.01x = 880,612.05 × 351,649.65
  4. Step 4: Simplify right side
    638,111.01x = 309,666,919,168.28
  5. Step 5: Solve for x
    x = 309,666,919,168.28/638,111.01
  6. Step 6: Final answer
    x = 485,286.91

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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.