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Finding the Fourth Proportional to 634,878.87, 876,143.75 and 348,425.61

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Solution

The fourth proportional to 634,878.87, 876,143.75 and 348,425.61 is: 480,833.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,878.87 : 876,143.75 = 348,425.61 : x
  2. Step 2: Convert to fraction form
    634,878.87/876,143.75 = 348,425.61/x
  3. Step 3: Cross multiply
    634,878.87x = 876,143.75 × 348,425.61
  4. Step 4: Simplify right side
    634,878.87x = 305,270,920,541.44
  5. Step 5: Solve for x
    x = 305,270,920,541.44/634,878.87
  6. Step 6: Final answer
    x = 480,833.33

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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.