Home / 679,288,956.80-1,018,765,145.52-291,067,763.36

Finding the Fourth Proportional to 679,288,956.80, 1,018,765,145.52 and 291,067,763.36

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Solution

The fourth proportional to 679,288,956.80, 1,018,765,145.52 and 291,067,763.36 is: 436,529,534.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,288,956.80 : 1,018,765,145.52 = 291,067,763.36 : x
  2. Step 2: Convert to fraction form
    679,288,956.80/1,018,765,145.52 = 291,067,763.36/x
  3. Step 3: Cross multiply
    679,288,956.80x = 1,018,765,145.52 × 291,067,763.36
  4. Step 4: Simplify right side
    679,288,956.80x = 296,529,692,290,537,536
  5. Step 5: Solve for x
    x = 296,529,692,290,537,536/679,288,956.80
  6. Step 6: Final answer
    x = 436,529,534.78

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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.