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Finding the Fourth Proportional to 630,744.66, 870,540.48 and 376,112.25

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Solution

The fourth proportional to 630,744.66, 870,540.48 and 376,112.25 is: 519,102.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,744.66 : 870,540.48 = 376,112.25 : x
  2. Step 2: Convert to fraction form
    630,744.66/870,540.48 = 376,112.25/x
  3. Step 3: Cross multiply
    630,744.66x = 870,540.48 × 376,112.25
  4. Step 4: Simplify right side
    630,744.66x = 327,420,938,648.88
  5. Step 5: Solve for x
    x = 327,420,938,648.88/630,744.66
  6. Step 6: Final answer
    x = 519,102.20

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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.