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Finding the Fourth Proportional to 591,994.37, 816,407.10 and 387,970.97

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Solution

The fourth proportional to 591,994.37, 816,407.10 and 387,970.97 is: 535,042.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,994.37 : 816,407.10 = 387,970.97 : x
  2. Step 2: Convert to fraction form
    591,994.37/816,407.10 = 387,970.97/x
  3. Step 3: Cross multiply
    591,994.37x = 816,407.10 × 387,970.97
  4. Step 4: Simplify right side
    591,994.37x = 316,742,250,419.85
  5. Step 5: Solve for x
    x = 316,742,250,419.85/591,994.37
  6. Step 6: Final answer
    x = 535,042.67

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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.