Home / 657,986.76-987,016.19-208,675.10

Finding the Fourth Proportional to 657,986.76, 987,016.19 and 208,675.10

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Solution

The fourth proportional to 657,986.76, 987,016.19 and 208,675.10 is: 313,024.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,986.76 : 987,016.19 = 208,675.10 : x
  2. Step 2: Convert to fraction form
    657,986.76/987,016.19 = 208,675.10/x
  3. Step 3: Cross multiply
    657,986.76x = 987,016.19 × 208,675.10
  4. Step 4: Simplify right side
    657,986.76x = 205,965,703,574.03
  5. Step 5: Solve for x
    x = 205,965,703,574.03/657,986.76
  6. Step 6: Final answer
    x = 313,024.09

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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.