Home / 1,217,005.40-1,825,335.30-418,323.80

Finding the Fourth Proportional to 1,217,005.40, 1,825,335.30 and 418,323.80

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Solution

The fourth proportional to 1,217,005.40, 1,825,335.30 and 418,323.80 is: 627,426.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,005.40 : 1,825,335.30 = 418,323.80 : x
  2. Step 2: Convert to fraction form
    1,217,005.40/1,825,335.30 = 418,323.80/x
  3. Step 3: Cross multiply
    1,217,005.40x = 1,825,335.30 × 418,323.80
  4. Step 4: Simplify right side
    1,217,005.40x = 763,581,198,970.14
  5. Step 5: Solve for x
    x = 763,581,198,970.14/1,217,005.40
  6. Step 6: Final answer
    x = 627,426.30

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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.