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Finding the Fourth Proportional to 789,900.40, 1,184,993.16 and 257,374

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Solution

The fourth proportional to 789,900.40, 1,184,993.16 and 257,374 is: 386,107.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,900.40 : 1,184,993.16 = 257,374 : x
  2. Step 2: Convert to fraction form
    789,900.40/1,184,993.16 = 257,374/x
  3. Step 3: Cross multiply
    789,900.40x = 1,184,993.16 × 257,374
  4. Step 4: Simplify right side
    789,900.40x = 304,986,429,561.84
  5. Step 5: Solve for x
    x = 304,986,429,561.84/789,900.40
  6. Step 6: Final answer
    x = 386,107.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.