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Finding the Fourth Proportional to 643,625.94, 888,376.14 and 401,762.92

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Solution

The fourth proportional to 643,625.94, 888,376.14 and 401,762.92 is: 554,540.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,625.94 : 888,376.14 = 401,762.92 : x
  2. Step 2: Convert to fraction form
    643,625.94/888,376.14 = 401,762.92/x
  3. Step 3: Cross multiply
    643,625.94x = 888,376.14 × 401,762.92
  4. Step 4: Simplify right side
    643,625.94x = 356,916,592,064.73
  5. Step 5: Solve for x
    x = 356,916,592,064.73/643,625.94
  6. Step 6: Final answer
    x = 554,540.41

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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.