Home / 817,257.88-1,127,971.20-511,476.40

Finding the Fourth Proportional to 817,257.88, 1,127,971.20 and 511,476.40

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Solution

The fourth proportional to 817,257.88, 1,127,971.20 and 511,476.40 is: 705,934.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,257.88 : 1,127,971.20 = 511,476.40 : x
  2. Step 2: Convert to fraction form
    817,257.88/1,127,971.20 = 511,476.40/x
  3. Step 3: Cross multiply
    817,257.88x = 1,127,971.20 × 511,476.40
  4. Step 4: Simplify right side
    817,257.88x = 576,930,648,679.68
  5. Step 5: Solve for x
    x = 576,930,648,679.68/817,257.88
  6. Step 6: Final answer
    x = 705,934.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.