Home / 817,916.62-1,227,125.32-418,839.94

Finding the Fourth Proportional to 817,916.62, 1,227,125.32 and 418,839.94

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Solution

The fourth proportional to 817,916.62, 1,227,125.32 and 418,839.94 is: 628,388.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,916.62 : 1,227,125.32 = 418,839.94 : x
  2. Step 2: Convert to fraction form
    817,916.62/1,227,125.32 = 418,839.94/x
  3. Step 3: Cross multiply
    817,916.62x = 1,227,125.32 × 418,839.94
  4. Step 4: Simplify right side
    817,916.62x = 513,969,095,401.28
  5. Step 5: Solve for x
    x = 513,969,095,401.28/817,916.62
  6. Step 6: Final answer
    x = 628,388.13

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1.5x scale

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.