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Finding the Fourth Proportional to 289,449,615.40, 406,304,415.80 and 289,449,615.40

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Solution

The fourth proportional to 289,449,615.40, 406,304,415.80 and 289,449,615.40 is: 406,304,415.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,449,615.40 : 406,304,415.80 = 289,449,615.40 : x
  2. Step 2: Convert to fraction form
    289,449,615.40/406,304,415.80 = 289,449,615.40/x
  3. Step 3: Cross multiply
    289,449,615.40x = 406,304,415.80 × 289,449,615.40
  4. Step 4: Simplify right side
    289,449,615.40x = 117,604,656,888,631,680
  5. Step 5: Solve for x
    x = 117,604,656,888,631,680/289,449,615.40
  6. Step 6: Final answer
    x = 406,304,415.80

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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.