Home / 687,664.38-948,952.35-381,754.11

Finding the Fourth Proportional to 687,664.38, 948,952.35 and 381,754.11

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Solution

The fourth proportional to 687,664.38, 948,952.35 and 381,754.11 is: 526,807.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,664.38 : 948,952.35 = 381,754.11 : x
  2. Step 2: Convert to fraction form
    687,664.38/948,952.35 = 381,754.11/x
  3. Step 3: Cross multiply
    687,664.38x = 948,952.35 × 381,754.11
  4. Step 4: Simplify right side
    687,664.38x = 362,266,459,806.66
  5. Step 5: Solve for x
    x = 362,266,459,806.66/687,664.38
  6. Step 6: Final answer
    x = 526,807.07

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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.