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Finding the Fourth Proportional to 679,673.79, 1,019,444.76 and 206,363.25

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Solution

The fourth proportional to 679,673.79, 1,019,444.76 and 206,363.25 is: 309,524.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,673.79 : 1,019,444.76 = 206,363.25 : x
  2. Step 2: Convert to fraction form
    679,673.79/1,019,444.76 = 206,363.25/x
  3. Step 3: Cross multiply
    679,673.79x = 1,019,444.76 × 206,363.25
  4. Step 4: Simplify right side
    679,673.79x = 210,375,933,869.07
  5. Step 5: Solve for x
    x = 210,375,933,869.07/679,673.79
  6. Step 6: Final answer
    x = 309,524.86

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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.