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Finding the Fourth Proportional to 634,879.57, 876,090.67 and 348,418.11

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Solution

The fourth proportional to 634,879.57, 876,090.67 and 348,418.11 is: 480,793.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,879.57 : 876,090.67 = 348,418.11 : x
  2. Step 2: Convert to fraction form
    634,879.57/876,090.67 = 348,418.11/x
  3. Step 3: Cross multiply
    634,879.57x = 876,090.67 × 348,418.11
  4. Step 4: Simplify right side
    634,879.57x = 305,245,855,430.03
  5. Step 5: Solve for x
    x = 305,245,855,430.03/634,879.57
  6. Step 6: Final answer
    x = 480,793.32

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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.