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Finding the Fourth Proportional to 396,574,618,656.72, 594,978,638,365.91 and 127,958,559,711.04

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Solution

The fourth proportional to 396,574,618,656.72, 594,978,638,365.91 and 127,958,559,711.04 is: 191,975,497,277.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,574,618,656.72 : 594,978,638,365.91 = 127,958,559,711.04 : x
  2. Step 2: Convert to fraction form
    396,574,618,656.72/594,978,638,365.91 = 127,958,559,711.04/x
  3. Step 3: Cross multiply
    396,574,618,656.72x = 594,978,638,365.91 × 127,958,559,711.04
  4. Step 4: Simplify right side
    396,574,618,656.72x = 76,132,609,624,137,562,849,280
  5. Step 5: Solve for x
    x = 76,132,609,624,137,562,849,280/396,574,618,656.72
  6. Step 6: Final answer
    x = 191,975,497,277.19

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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.