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Finding the Fourth Proportional to 703,435.28, 970,737.32 and 381,145.32

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Solution

The fourth proportional to 703,435.28, 970,737.32 and 381,145.32 is: 525,978.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,435.28 : 970,737.32 = 381,145.32 : x
  2. Step 2: Convert to fraction form
    703,435.28/970,737.32 = 381,145.32/x
  3. Step 3: Cross multiply
    703,435.28x = 970,737.32 × 381,145.32
  4. Step 4: Simplify right side
    703,435.28x = 369,991,986,467.34
  5. Step 5: Solve for x
    x = 369,991,986,467.34/703,435.28
  6. Step 6: Final answer
    x = 525,978.72

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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.