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Finding the Fourth Proportional to 703,181.12, 970,389.50 and 380,890.48

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Solution

The fourth proportional to 703,181.12, 970,389.50 and 380,890.48 is: 525,628.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,181.12 : 970,389.50 = 380,890.48 : x
  2. Step 2: Convert to fraction form
    703,181.12/970,389.50 = 380,890.48/x
  3. Step 3: Cross multiply
    703,181.12x = 970,389.50 × 380,890.48
  4. Step 4: Simplify right side
    703,181.12x = 369,612,122,441.96
  5. Step 5: Solve for x
    x = 369,612,122,441.96/703,181.12
  6. Step 6: Final answer
    x = 525,628.62

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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.