Home / 647,388,625.20-971,082,937.80-238,391,631.60

Finding the Fourth Proportional to 647,388,625.20, 971,082,937.80 and 238,391,631.60

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Solution

The fourth proportional to 647,388,625.20, 971,082,937.80 and 238,391,631.60 is: 357,587,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,388,625.20 : 971,082,937.80 = 238,391,631.60 : x
  2. Step 2: Convert to fraction form
    647,388,625.20/971,082,937.80 = 238,391,631.60/x
  3. Step 3: Cross multiply
    647,388,625.20x = 971,082,937.80 × 238,391,631.60
  4. Step 4: Simplify right side
    647,388,625.20x = 231,498,045,961,063,296
  5. Step 5: Solve for x
    x = 231,498,045,961,063,296/647,388,625.20
  6. Step 6: Final answer
    x = 357,587,447.40

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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.