Home / 817,916.37-1,227,124.95-418,839.71

Finding the Fourth Proportional to 817,916.37, 1,227,124.95 and 418,839.71

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Solution

The fourth proportional to 817,916.37, 1,227,124.95 and 418,839.71 is: 628,387.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,916.37 : 1,227,124.95 = 418,839.71 : x
  2. Step 2: Convert to fraction form
    817,916.37/1,227,124.95 = 418,839.71/x
  3. Step 3: Cross multiply
    817,916.37x = 1,227,124.95 × 418,839.71
  4. Step 4: Simplify right side
    817,916.37x = 513,968,652,056.14
  5. Step 5: Solve for x
    x = 513,968,652,056.14/817,916.37
  6. Step 6: Final answer
    x = 628,387.78

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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.