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Finding the Fourth Proportional to 643,892.24, 888,574.73 and 402,314.92

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Solution

The fourth proportional to 643,892.24, 888,574.73 and 402,314.92 is: 555,196.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,892.24 : 888,574.73 = 402,314.92 : x
  2. Step 2: Convert to fraction form
    643,892.24/888,574.73 = 402,314.92/x
  3. Step 3: Cross multiply
    643,892.24x = 888,574.73 × 402,314.92
  4. Step 4: Simplify right side
    643,892.24x = 357,486,871,413.97
  5. Step 5: Solve for x
    x = 357,486,871,413.97/643,892.24
  6. Step 6: Final answer
    x = 555,196.74

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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.