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Finding the Fourth Proportional to 1,321,910.76, 1,982,941.38 and 375,207

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Solution

The fourth proportional to 1,321,910.76, 1,982,941.38 and 375,207 is: 562,831.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,910.76 : 1,982,941.38 = 375,207 : x
  2. Step 2: Convert to fraction form
    1,321,910.76/1,982,941.38 = 375,207/x
  3. Step 3: Cross multiply
    1,321,910.76x = 1,982,941.38 × 375,207
  4. Step 4: Simplify right side
    1,321,910.76x = 744,013,486,365.66
  5. Step 5: Solve for x
    x = 744,013,486,365.66/1,321,910.76
  6. Step 6: Final answer
    x = 562,831.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.