Home / 817,913.62-1,227,120.83-418,836.95

Finding the Fourth Proportional to 817,913.62, 1,227,120.83 and 418,836.95

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Solution

The fourth proportional to 817,913.62, 1,227,120.83 and 418,836.95 is: 628,383.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,913.62 : 1,227,120.83 = 418,836.95 : x
  2. Step 2: Convert to fraction form
    817,913.62/1,227,120.83 = 418,836.95/x
  3. Step 3: Cross multiply
    817,913.62x = 1,227,120.83 × 418,836.95
  4. Step 4: Simplify right side
    817,913.62x = 513,963,545,718.67
  5. Step 5: Solve for x
    x = 513,963,545,718.67/817,913.62
  6. Step 6: Final answer
    x = 628,383.65

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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.