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Finding the Fourth Proportional to 703,423.45, 970,722.99 and 381,142.27

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Solution

The fourth proportional to 703,423.45, 970,722.99 and 381,142.27 is: 525,975.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,423.45 : 970,722.99 = 381,142.27 : x
  2. Step 2: Convert to fraction form
    703,423.45/970,722.99 = 381,142.27/x
  3. Step 3: Cross multiply
    703,423.45x = 970,722.99 × 381,142.27
  4. Step 4: Simplify right side
    703,423.45x = 369,983,563,949.79
  5. Step 5: Solve for x
    x = 369,983,563,949.79/703,423.45
  6. Step 6: Final answer
    x = 525,975.59

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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.