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Finding the Fourth Proportional to 630,910.40, 944,810.40 and 419,403.20

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Solution

The fourth proportional to 630,910.40, 944,810.40 and 419,403.20 is: 628,070.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,910.40 : 944,810.40 = 419,403.20 : x
  2. Step 2: Convert to fraction form
    630,910.40/944,810.40 = 419,403.20/x
  3. Step 3: Cross multiply
    630,910.40x = 944,810.40 × 419,403.20
  4. Step 4: Simplify right side
    630,910.40x = 396,256,505,153.28
  5. Step 5: Solve for x
    x = 396,256,505,153.28/630,910.40
  6. Step 6: Final answer
    x = 628,070.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.