Home / 687,181.52-948,278.47-381,254.64

Finding the Fourth Proportional to 687,181.52, 948,278.47 and 381,254.64

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Solution

The fourth proportional to 687,181.52, 948,278.47 and 381,254.64 is: 526,113.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,181.52 : 948,278.47 = 381,254.64 : x
  2. Step 2: Convert to fraction form
    687,181.52/948,278.47 = 381,254.64/x
  3. Step 3: Cross multiply
    687,181.52x = 948,278.47 × 381,254.64
  4. Step 4: Simplify right side
    687,181.52x = 361,535,566,699.60
  5. Step 5: Solve for x
    x = 361,535,566,699.60/687,181.52
  6. Step 6: Final answer
    x = 526,113.63

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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.