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Finding the Fourth Proportional to 666,859,621.18, 920,267,358.81 and 365,397,028.37

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Solution

The fourth proportional to 666,859,621.18, 920,267,358.81 and 365,397,028.37 is: 504,248,491.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,859,621.18 : 920,267,358.81 = 365,397,028.37 : x
  2. Step 2: Convert to fraction form
    666,859,621.18/920,267,358.81 = 365,397,028.37/x
  3. Step 3: Cross multiply
    666,859,621.18x = 920,267,358.81 × 365,397,028.37
  4. Step 4: Simplify right side
    666,859,621.18x = 336,262,958,215,082,496
  5. Step 5: Solve for x
    x = 336,262,958,215,082,496/666,859,621.18
  6. Step 6: Final answer
    x = 504,248,491.79

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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.