Home / 408,860,557.20-613,290,835.80-190,438,306.20

Finding the Fourth Proportional to 408,860,557.20, 613,290,835.80 and 190,438,306.20

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Solution

The fourth proportional to 408,860,557.20, 613,290,835.80 and 190,438,306.20 is: 285,657,459.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,860,557.20 : 613,290,835.80 = 190,438,306.20 : x
  2. Step 2: Convert to fraction form
    408,860,557.20/613,290,835.80 = 190,438,306.20/x
  3. Step 3: Cross multiply
    408,860,557.20x = 613,290,835.80 × 190,438,306.20
  4. Step 4: Simplify right side
    408,860,557.20x = 116,794,067,977,734,304
  5. Step 5: Solve for x
    x = 116,794,067,977,734,304/408,860,557.20
  6. Step 6: Final answer
    x = 285,657,459.30

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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.