Home / 687,633.85-948,926.37-381,712.65

Finding the Fourth Proportional to 687,633.85, 948,926.37 and 381,712.65

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Solution

The fourth proportional to 687,633.85, 948,926.37 and 381,712.65 is: 526,758.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,633.85 : 948,926.37 = 381,712.65 : x
  2. Step 2: Convert to fraction form
    687,633.85/948,926.37 = 381,712.65/x
  3. Step 3: Cross multiply
    687,633.85x = 948,926.37 × 381,712.65
  4. Step 4: Simplify right side
    687,633.85x = 362,217,199,347.58
  5. Step 5: Solve for x
    x = 362,217,199,347.58/687,633.85
  6. Step 6: Final answer
    x = 526,758.83

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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.