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Finding the Fourth Proportional to 634,891.46, 876,160.86 and 348,438.20

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Solution

The fourth proportional to 634,891.46, 876,160.86 and 348,438.20 is: 480,850.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,891.46 : 876,160.86 = 348,438.20 : x
  2. Step 2: Convert to fraction form
    634,891.46/876,160.86 = 348,438.20/x
  3. Step 3: Cross multiply
    634,891.46x = 876,160.86 × 348,438.20
  4. Step 4: Simplify right side
    634,891.46x = 305,287,912,968.85
  5. Step 5: Solve for x
    x = 305,287,912,968.85/634,891.46
  6. Step 6: Final answer
    x = 480,850.56

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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.