Home / 812,021,751.80-1,120,560,011.36-440,735,811.56

Finding the Fourth Proportional to 812,021,751.80, 1,120,560,011.36 and 440,735,811.56

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Solution

The fourth proportional to 812,021,751.80, 1,120,560,011.36 and 440,735,811.56 is: 608,199,133.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,021,751.80 : 1,120,560,011.36 = 440,735,811.56 : x
  2. Step 2: Convert to fraction form
    812,021,751.80/1,120,560,011.36 = 440,735,811.56/x
  3. Step 3: Cross multiply
    812,021,751.80x = 1,120,560,011.36 × 440,735,811.56
  4. Step 4: Simplify right side
    812,021,751.80x = 493,870,926,008,432,384
  5. Step 5: Solve for x
    x = 493,870,926,008,432,384/812,021,751.80
  6. Step 6: Final answer
    x = 608,199,133.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.