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Finding the Fourth Proportional to 634,879.87, 876,145.13 and 348,426.61

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Solution

The fourth proportional to 634,879.87, 876,145.13 and 348,426.61 is: 480,834.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,879.87 : 876,145.13 = 348,426.61 : x
  2. Step 2: Convert to fraction form
    634,879.87/876,145.13 = 348,426.61/x
  3. Step 3: Cross multiply
    634,879.87x = 876,145.13 × 348,426.61
  4. Step 4: Simplify right side
    634,879.87x = 305,272,277,513.91
  5. Step 5: Solve for x
    x = 305,272,277,513.91/634,879.87
  6. Step 6: Final answer
    x = 480,834.71

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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.