Home / 764,894,739.20-1,146,491,803.20-420,095,818.40

Finding the Fourth Proportional to 764,894,739.20, 1,146,491,803.20 and 420,095,818.40

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Solution

The fourth proportional to 764,894,739.20, 1,146,491,803.20 and 420,095,818.40 is: 629,676,722.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,894,739.20 : 1,146,491,803.20 = 420,095,818.40 : x
  2. Step 2: Convert to fraction form
    764,894,739.20/1,146,491,803.20 = 420,095,818.40/x
  3. Step 3: Cross multiply
    764,894,739.20x = 1,146,491,803.20 × 420,095,818.40
  4. Step 4: Simplify right side
    764,894,739.20x = 481,636,412,354,195,712
  5. Step 5: Solve for x
    x = 481,636,412,354,195,712/764,894,739.20
  6. Step 6: Final answer
    x = 629,676,722.39

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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.