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Finding the Fourth Proportional to 703,308.25, 970,565.79 and 381,020.59

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Solution

The fourth proportional to 703,308.25, 970,565.79 and 381,020.59 is: 525,808.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,308.25 : 970,565.79 = 381,020.59 : x
  2. Step 2: Convert to fraction form
    703,308.25/970,565.79 = 381,020.59/x
  3. Step 3: Cross multiply
    703,308.25x = 970,565.79 × 381,020.59
  4. Step 4: Simplify right side
    703,308.25x = 369,805,549,939.62
  5. Step 5: Solve for x
    x = 369,805,549,939.62/703,308.25
  6. Step 6: Final answer
    x = 525,808.63

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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.