Home / 516,660.42-712,969.08-287,217.18

Finding the Fourth Proportional to 516,660.42, 712,969.08 and 287,217.18

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Solution

The fourth proportional to 516,660.42, 712,969.08 and 287,217.18 is: 396,347.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,660.42 : 712,969.08 = 287,217.18 : x
  2. Step 2: Convert to fraction form
    516,660.42/712,969.08 = 287,217.18/x
  3. Step 3: Cross multiply
    516,660.42x = 712,969.08 × 287,217.18
  4. Step 4: Simplify right side
    516,660.42x = 204,776,968,584.79
  5. Step 5: Solve for x
    x = 204,776,968,584.79/516,660.42
  6. Step 6: Final answer
    x = 396,347.31

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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.