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Finding the Fourth Proportional to 634,617.28, 875,706.96 and 379,961.92

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Solution

The fourth proportional to 634,617.28, 875,706.96 and 379,961.92 is: 524,308.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,617.28 : 875,706.96 = 379,961.92 : x
  2. Step 2: Convert to fraction form
    634,617.28/875,706.96 = 379,961.92/x
  3. Step 3: Cross multiply
    634,617.28x = 875,706.96 × 379,961.92
  4. Step 4: Simplify right side
    634,617.28x = 332,735,297,878.96
  5. Step 5: Solve for x
    x = 332,735,297,878.96/634,617.28
  6. Step 6: Final answer
    x = 524,308.60

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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.