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Finding the Fourth Proportional to 664,556.68, 996,484.72 and 290,142.28

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Solution

The fourth proportional to 664,556.68, 996,484.72 and 290,142.28 is: 435,060.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,556.68 : 996,484.72 = 290,142.28 : x
  2. Step 2: Convert to fraction form
    664,556.68/996,484.72 = 290,142.28/x
  3. Step 3: Cross multiply
    664,556.68x = 996,484.72 × 290,142.28
  4. Step 4: Simplify right side
    664,556.68x = 289,122,348,645.96
  5. Step 5: Solve for x
    x = 289,122,348,645.96/664,556.68
  6. Step 6: Final answer
    x = 435,060.48

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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.