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Finding the Fourth Proportional to 675,170.98, 931,850.52 and 388,856.83

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Solution

The fourth proportional to 675,170.98, 931,850.52 and 388,856.83 is: 536,688.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,170.98 : 931,850.52 = 388,856.83 : x
  2. Step 2: Convert to fraction form
    675,170.98/931,850.52 = 388,856.83/x
  3. Step 3: Cross multiply
    675,170.98x = 931,850.52 × 388,856.83
  4. Step 4: Simplify right side
    675,170.98x = 362,356,439,241.05
  5. Step 5: Solve for x
    x = 362,356,439,241.05/675,170.98
  6. Step 6: Final answer
    x = 536,688.41

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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.