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Finding the Fourth Proportional to 703,425.96, 970,726.44 and 381,144.78

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Solution

The fourth proportional to 703,425.96, 970,726.44 and 381,144.78 is: 525,979.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,425.96 : 970,726.44 = 381,144.78 : x
  2. Step 2: Convert to fraction form
    703,425.96/970,726.44 = 381,144.78/x
  3. Step 3: Cross multiply
    703,425.96x = 970,726.44 × 381,144.78
  4. Step 4: Simplify right side
    703,425.96x = 369,987,315,413.98
  5. Step 5: Solve for x
    x = 369,987,315,413.98/703,425.96
  6. Step 6: Final answer
    x = 525,979.05

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Double scale
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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.