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Finding the Fourth Proportional to 703,243.87, 970,479.52 and 380,953.97

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Solution

The fourth proportional to 703,243.87, 970,479.52 and 380,953.97 is: 525,718.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,243.87 : 970,479.52 = 380,953.97 : x
  2. Step 2: Convert to fraction form
    703,243.87/970,479.52 = 380,953.97/x
  3. Step 3: Cross multiply
    703,243.87x = 970,479.52 × 380,953.97
  4. Step 4: Simplify right side
    703,243.87x = 369,708,021,616.73
  5. Step 5: Solve for x
    x = 369,708,021,616.73/703,243.87
  6. Step 6: Final answer
    x = 525,718.08

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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.