Home / 638,186.47-880,697.33-351,706.56

Finding the Fourth Proportional to 638,186.47, 880,697.33 and 351,706.56

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Solution

The fourth proportional to 638,186.47, 880,697.33 and 351,706.56 is: 485,355.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,186.47 : 880,697.33 = 351,706.56 : x
  2. Step 2: Convert to fraction form
    638,186.47/880,697.33 = 351,706.56/x
  3. Step 3: Cross multiply
    638,186.47x = 880,697.33 × 351,706.56
  4. Step 4: Simplify right side
    638,186.47x = 309,747,025,582.41
  5. Step 5: Solve for x
    x = 309,747,025,582.41/638,186.47
  6. Step 6: Final answer
    x = 485,355.05

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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.