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Finding the Fourth Proportional to 413,722,604.80, 620,534,140.80 and 171,360,236.80

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Solution

The fourth proportional to 413,722,604.80, 620,534,140.80 and 171,360,236.80 is: 257,019,742.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,722,604.80 : 620,534,140.80 = 171,360,236.80 : x
  2. Step 2: Convert to fraction form
    413,722,604.80/620,534,140.80 = 171,360,236.80/x
  3. Step 3: Cross multiply
    413,722,604.80x = 620,534,140.80 × 171,360,236.80
  4. Step 4: Simplify right side
    413,722,604.80x = 106,334,877,309,972,544
  5. Step 5: Solve for x
    x = 106,334,877,309,972,544/413,722,604.80
  6. Step 6: Final answer
    x = 257,019,742.40

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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.