Home / 679,681.32-1,019,456.01-206,370.78

Finding the Fourth Proportional to 679,681.32, 1,019,456.01 and 206,370.78

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Solution

The fourth proportional to 679,681.32, 1,019,456.01 and 206,370.78 is: 309,536.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,681.32 : 1,019,456.01 = 206,370.78 : x
  2. Step 2: Convert to fraction form
    679,681.32/1,019,456.01 = 206,370.78/x
  3. Step 3: Cross multiply
    679,681.32x = 1,019,456.01 × 206,370.78
  4. Step 4: Simplify right side
    679,681.32x = 210,385,931,959.39
  5. Step 5: Solve for x
    x = 210,385,931,959.39/679,681.32
  6. Step 6: Final answer
    x = 309,536.14

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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.