Home / 638,402.22-881,001.21-351,932.64

Finding the Fourth Proportional to 638,402.22, 881,001.21 and 351,932.64

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Solution

The fourth proportional to 638,402.22, 881,001.21 and 351,932.64 is: 485,670.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,402.22 : 881,001.21 = 351,932.64 : x
  2. Step 2: Convert to fraction form
    638,402.22/881,001.21 = 351,932.64/x
  3. Step 3: Cross multiply
    638,402.22x = 881,001.21 × 351,932.64
  4. Step 4: Simplify right side
    638,402.22x = 310,053,081,678.49
  5. Step 5: Solve for x
    x = 310,053,081,678.49/638,402.22
  6. Step 6: Final answer
    x = 485,670.43

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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.