Home / 638,199.71-880,675.74-351,721.85

Finding the Fourth Proportional to 638,199.71, 880,675.74 and 351,721.85

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Solution

The fourth proportional to 638,199.71, 880,675.74 and 351,721.85 is: 485,354.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,199.71 : 880,675.74 = 351,721.85 : x
  2. Step 2: Convert to fraction form
    638,199.71/880,675.74 = 351,721.85/x
  3. Step 3: Cross multiply
    638,199.71x = 880,675.74 × 351,721.85
  4. Step 4: Simplify right side
    638,199.71x = 309,752,896,119.54
  5. Step 5: Solve for x
    x = 309,752,896,119.54/638,199.71
  6. Step 6: Final answer
    x = 485,354.18

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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.