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Finding the Fourth Proportional to 450,625, 621,863.06 and 280,859

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Solution

The fourth proportional to 450,625, 621,863.06 and 280,859 is: 387,585.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,625 : 621,863.06 = 280,859 : x
  2. Step 2: Convert to fraction form
    450,625/621,863.06 = 280,859/x
  3. Step 3: Cross multiply
    450,625x = 621,863.06 × 280,859
  4. Step 4: Simplify right side
    450,625x = 174,655,837,168.54
  5. Step 5: Solve for x
    x = 174,655,837,168.54/450,625
  6. Step 6: Final answer
    x = 387,585.77

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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.