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Finding the Fourth Proportional to 289,449,631.40, 406,304,438.20 and 289,449,631.40

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Solution

The fourth proportional to 289,449,631.40, 406,304,438.20 and 289,449,631.40 is: 406,304,438.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,449,631.40 : 406,304,438.20 = 289,449,631.40 : x
  2. Step 2: Convert to fraction form
    289,449,631.40/406,304,438.20 = 289,449,631.40/x
  3. Step 3: Cross multiply
    289,449,631.40x = 406,304,438.20 × 289,449,631.40
  4. Step 4: Simplify right side
    289,449,631.40x = 117,604,669,873,174,064
  5. Step 5: Solve for x
    x = 117,604,669,873,174,064/289,449,631.40
  6. Step 6: Final answer
    x = 406,304,438.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.