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Finding the Fourth Proportional to 450,792.15, 622,142.83 and 287,454.66

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Solution

The fourth proportional to 450,792.15, 622,142.83 and 287,454.66 is: 396,719.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,792.15 : 622,142.83 = 287,454.66 : x
  2. Step 2: Convert to fraction form
    450,792.15/622,142.83 = 287,454.66/x
  3. Step 3: Cross multiply
    450,792.15x = 622,142.83 × 287,454.66
  4. Step 4: Simplify right side
    450,792.15x = 178,837,855,669.09
  5. Step 5: Solve for x
    x = 178,837,855,669.09/450,792.15
  6. Step 6: Final answer
    x = 396,719.10

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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.