Home / 638,442.10-881,089.77-351,961.66

Finding the Fourth Proportional to 638,442.10, 881,089.77 and 351,961.66

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Solution

The fourth proportional to 638,442.10, 881,089.77 and 351,961.66 is: 485,728.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,442.10 : 881,089.77 = 351,961.66 : x
  2. Step 2: Convert to fraction form
    638,442.10/881,089.77 = 351,961.66/x
  3. Step 3: Cross multiply
    638,442.10x = 881,089.77 × 351,961.66
  4. Step 4: Simplify right side
    638,442.10x = 310,109,818,058.22
  5. Step 5: Solve for x
    x = 310,109,818,058.22/638,442.10
  6. Step 6: Final answer
    x = 485,728.96

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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.