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Finding the Fourth Proportional to 703,009.19, 970,147.85 and 380,711.91

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Solution

The fourth proportional to 703,009.19, 970,147.85 and 380,711.91 is: 525,379.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,009.19 : 970,147.85 = 380,711.91 : x
  2. Step 2: Convert to fraction form
    703,009.19/970,147.85 = 380,711.91/x
  3. Step 3: Cross multiply
    703,009.19x = 970,147.85 × 380,711.91
  4. Step 4: Simplify right side
    703,009.19x = 369,346,839,052.33
  5. Step 5: Solve for x
    x = 369,346,839,052.33/703,009.19
  6. Step 6: Final answer
    x = 525,379.81

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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.