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Finding the Fourth Proportional to 450,044.72, 620,769.06 and 288,644.12

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Solution

The fourth proportional to 450,044.72, 620,769.06 and 288,644.12 is: 398,141.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,044.72 : 620,769.06 = 288,644.12 : x
  2. Step 2: Convert to fraction form
    450,044.72/620,769.06 = 288,644.12/x
  3. Step 3: Cross multiply
    450,044.72x = 620,769.06 × 288,644.12
  4. Step 4: Simplify right side
    450,044.72x = 179,181,339,046.93
  5. Step 5: Solve for x
    x = 179,181,339,046.93/450,044.72
  6. Step 6: Final answer
    x = 398,141.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.