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Finding the Fourth Proportional to 665,001.80, 997,632.30 and 285,921.80

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Solution

The fourth proportional to 665,001.80, 997,632.30 and 285,921.80 is: 428,938.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,001.80 : 997,632.30 = 285,921.80 : x
  2. Step 2: Convert to fraction form
    665,001.80/997,632.30 = 285,921.80/x
  3. Step 3: Cross multiply
    665,001.80x = 997,632.30 × 285,921.80
  4. Step 4: Simplify right side
    665,001.80x = 285,244,822,954.14
  5. Step 5: Solve for x
    x = 285,244,822,954.14/665,001.80
  6. Step 6: Final answer
    x = 428,938.42

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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.