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Finding the Fourth Proportional to 675,282.08, 931,919.18 and 388,894.43

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Solution

The fourth proportional to 675,282.08, 931,919.18 and 388,894.43 is: 536,691.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,282.08 : 931,919.18 = 388,894.43 : x
  2. Step 2: Convert to fraction form
    675,282.08/931,919.18 = 388,894.43/x
  3. Step 3: Cross multiply
    675,282.08x = 931,919.18 × 388,894.43
  4. Step 4: Simplify right side
    675,282.08x = 362,418,178,697.49
  5. Step 5: Solve for x
    x = 362,418,178,697.49/675,282.08
  6. Step 6: Final answer
    x = 536,691.54

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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.