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Finding the Fourth Proportional to 679,713.47, 1,019,570.28 and 323,648

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Solution

The fourth proportional to 679,713.47, 1,019,570.28 and 323,648 is: 485,472.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,713.47 : 1,019,570.28 = 323,648 : x
  2. Step 2: Convert to fraction form
    679,713.47/1,019,570.28 = 323,648/x
  3. Step 3: Cross multiply
    679,713.47x = 1,019,570.28 × 323,648
  4. Step 4: Simplify right side
    679,713.47x = 329,981,881,981.44
  5. Step 5: Solve for x
    x = 329,981,881,981.44/679,713.47
  6. Step 6: Final answer
    x = 485,472.04

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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.