Home / 805,215.50-1,111,211.43-442,654.64

Finding the Fourth Proportional to 805,215.50, 1,111,211.43 and 442,654.64

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Solution

The fourth proportional to 805,215.50, 1,111,211.43 and 442,654.64 is: 610,871.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,215.50 : 1,111,211.43 = 442,654.64 : x
  2. Step 2: Convert to fraction form
    805,215.50/1,111,211.43 = 442,654.64/x
  3. Step 3: Cross multiply
    805,215.50x = 1,111,211.43 × 442,654.64
  4. Step 4: Simplify right side
    805,215.50x = 491,882,895,510.54
  5. Step 5: Solve for x
    x = 491,882,895,510.54/805,215.50
  6. Step 6: Final answer
    x = 610,871.12

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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.