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Finding the Fourth Proportional to 643,471.36, 888,032.48 and 371,550.72

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Solution

The fourth proportional to 643,471.36, 888,032.48 and 371,550.72 is: 512,764.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,471.36 : 888,032.48 = 371,550.72 : x
  2. Step 2: Convert to fraction form
    643,471.36/888,032.48 = 371,550.72/x
  3. Step 3: Cross multiply
    643,471.36x = 888,032.48 × 371,550.72
  4. Step 4: Simplify right side
    643,471.36x = 329,949,107,327.39
  5. Step 5: Solve for x
    x = 329,949,107,327.39/643,471.36
  6. Step 6: Final answer
    x = 512,764.25

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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.