Home / 679,681.82-1,019,456.76-206,371.28

Finding the Fourth Proportional to 679,681.82, 1,019,456.76 and 206,371.28

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Solution

The fourth proportional to 679,681.82, 1,019,456.76 and 206,371.28 is: 309,536.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,681.82 : 1,019,456.76 = 206,371.28 : x
  2. Step 2: Convert to fraction form
    679,681.82/1,019,456.76 = 206,371.28/x
  3. Step 3: Cross multiply
    679,681.82x = 1,019,456.76 × 206,371.28
  4. Step 4: Simplify right side
    679,681.82x = 210,386,596,465.85
  5. Step 5: Solve for x
    x = 210,386,596,465.85/679,681.82
  6. Step 6: Final answer
    x = 309,536.89

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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.