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Finding the Fourth Proportional to 679,448.88, 1,019,295.88 and 279,871.52

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Solution

The fourth proportional to 679,448.88, 1,019,295.88 and 279,871.52 is: 419,857.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,448.88 : 1,019,295.88 = 279,871.52 : x
  2. Step 2: Convert to fraction form
    679,448.88/1,019,295.88 = 279,871.52/x
  3. Step 3: Cross multiply
    679,448.88x = 1,019,295.88 × 279,871.52
  4. Step 4: Simplify right side
    679,448.88x = 285,271,887,265.34
  5. Step 5: Solve for x
    x = 285,271,887,265.34/679,448.88
  6. Step 6: Final answer
    x = 419,857.76

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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.