Home / 687,932.39-949,314.79-382,028.20

Finding the Fourth Proportional to 687,932.39, 949,314.79 and 382,028.20

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Solution

The fourth proportional to 687,932.39, 949,314.79 and 382,028.20 is: 527,181.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,932.39 : 949,314.79 = 382,028.20 : x
  2. Step 2: Convert to fraction form
    687,932.39/949,314.79 = 382,028.20/x
  3. Step 3: Cross multiply
    687,932.39x = 949,314.79 × 382,028.20
  4. Step 4: Simplify right side
    687,932.39x = 362,665,016,412.42
  5. Step 5: Solve for x
    x = 362,665,016,412.42/687,932.39
  6. Step 6: Final answer
    x = 527,181.19

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1.5x scale

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.