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Finding the Fourth Proportional to 703,226.18, 970,456.80 and 380,936.30

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Solution

The fourth proportional to 703,226.18, 970,456.80 and 380,936.30 is: 525,694.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,226.18 : 970,456.80 = 380,936.30 : x
  2. Step 2: Convert to fraction form
    703,226.18/970,456.80 = 380,936.30/x
  3. Step 3: Cross multiply
    703,226.18x = 970,456.80 × 380,936.30
  4. Step 4: Simplify right side
    703,226.18x = 369,682,222,701.84
  5. Step 5: Solve for x
    x = 369,682,222,701.84/703,226.18
  6. Step 6: Final answer
    x = 525,694.62

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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.