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Finding the Fourth Proportional to 450,626, 621,864.44 and 280,860

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Solution

The fourth proportional to 450,626, 621,864.44 and 280,860 is: 387,587.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,626 : 621,864.44 = 280,860 : x
  2. Step 2: Convert to fraction form
    450,626/621,864.44 = 280,860/x
  3. Step 3: Cross multiply
    450,626x = 621,864.44 × 280,860
  4. Step 4: Simplify right side
    450,626x = 174,656,846,618.40
  5. Step 5: Solve for x
    x = 174,656,846,618.40/450,626
  6. Step 6: Final answer
    x = 387,587.15

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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.