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Finding the Fourth Proportional to 703,521.99, 970,857.90 and 381,240

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Solution

The fourth proportional to 703,521.99, 970,857.90 and 381,240 is: 526,109.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,521.99 : 970,857.90 = 381,240 : x
  2. Step 2: Convert to fraction form
    703,521.99/970,857.90 = 381,240/x
  3. Step 3: Cross multiply
    703,521.99x = 970,857.90 × 381,240
  4. Step 4: Simplify right side
    703,521.99x = 370,129,865,796
  5. Step 5: Solve for x
    x = 370,129,865,796/703,521.99
  6. Step 6: Final answer
    x = 526,109.87

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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.