Home / 819,011.66-1,228,519.31-369,209.61

Finding the Fourth Proportional to 819,011.66, 1,228,519.31 and 369,209.61

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Solution

The fourth proportional to 819,011.66, 1,228,519.31 and 369,209.61 is: 553,815.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,011.66 : 1,228,519.31 = 369,209.61 : x
  2. Step 2: Convert to fraction form
    819,011.66/1,228,519.31 = 369,209.61/x
  3. Step 3: Cross multiply
    819,011.66x = 1,228,519.31 × 369,209.61
  4. Step 4: Simplify right side
    819,011.66x = 453,581,133,476.52
  5. Step 5: Solve for x
    x = 453,581,133,476.52/819,011.66
  6. Step 6: Final answer
    x = 553,815.24

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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.