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Finding the Fourth Proportional to 703,121.88, 970,307.82 and 380,831.88

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Solution

The fourth proportional to 703,121.88, 970,307.82 and 380,831.88 is: 525,547.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,121.88 : 970,307.82 = 380,831.88 : x
  2. Step 2: Convert to fraction form
    703,121.88/970,307.82 = 380,831.88/x
  3. Step 3: Cross multiply
    703,121.88x = 970,307.82 × 380,831.88
  4. Step 4: Simplify right side
    703,121.88x = 369,524,151,269.30
  5. Step 5: Solve for x
    x = 369,524,151,269.30/703,121.88
  6. Step 6: Final answer
    x = 525,547.79

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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.