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Finding the Fourth Proportional to 873,745.68, 1,311,128.08 and 368,275.76

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Solution

The fourth proportional to 873,745.68, 1,311,128.08 and 368,275.76 is: 552,628.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,745.68 : 1,311,128.08 = 368,275.76 : x
  2. Step 2: Convert to fraction form
    873,745.68/1,311,128.08 = 368,275.76/x
  3. Step 3: Cross multiply
    873,745.68x = 1,311,128.08 × 368,275.76
  4. Step 4: Simplify right side
    873,745.68x = 482,856,690,119.34
  5. Step 5: Solve for x
    x = 482,856,690,119.34/873,745.68
  6. Step 6: Final answer
    x = 552,628.41

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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.