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Finding the Fourth Proportional to 652,815.36, 978,508.80 and 279,060.48

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Solution

The fourth proportional to 652,815.36, 978,508.80 and 279,060.48 is: 418,285.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,815.36 : 978,508.80 = 279,060.48 : x
  2. Step 2: Convert to fraction form
    652,815.36/978,508.80 = 279,060.48/x
  3. Step 3: Cross multiply
    652,815.36x = 978,508.80 × 279,060.48
  4. Step 4: Simplify right side
    652,815.36x = 273,063,135,412.22
  5. Step 5: Solve for x
    x = 273,063,135,412.22/652,815.36
  6. Step 6: Final answer
    x = 418,285.40

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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.