Home / 881,388,751.20-1,320,571,472.40-420,334,159.20

Finding the Fourth Proportional to 881,388,751.20, 1,320,571,472.40 and 420,334,159.20

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Solution

The fourth proportional to 881,388,751.20, 1,320,571,472.40 and 420,334,159.20 is: 629,780,331.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,388,751.20 : 1,320,571,472.40 = 420,334,159.20 : x
  2. Step 2: Convert to fraction form
    881,388,751.20/1,320,571,472.40 = 420,334,159.20/x
  3. Step 3: Cross multiply
    881,388,751.20x = 1,320,571,472.40 × 420,334,159.20
  4. Step 4: Simplify right side
    881,388,751.20x = 555,081,299,514,760,000
  5. Step 5: Solve for x
    x = 555,081,299,514,760,000/881,388,751.20
  6. Step 6: Final answer
    x = 629,780,331.05

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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.