Home / 815,997,162.65-1,224,235,888.89-263,289,222.43

Finding the Fourth Proportional to 815,997,162.65, 1,224,235,888.89 and 263,289,222.43

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Solution

The fourth proportional to 815,997,162.65, 1,224,235,888.89 and 263,289,222.43 is: 395,011,318.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,997,162.65 : 1,224,235,888.89 = 263,289,222.43 : x
  2. Step 2: Convert to fraction form
    815,997,162.65/1,224,235,888.89 = 263,289,222.43/x
  3. Step 3: Cross multiply
    815,997,162.65x = 1,224,235,888.89 × 263,289,222.43
  4. Step 4: Simplify right side
    815,997,162.65x = 322,328,115,252,713,280
  5. Step 5: Solve for x
    x = 322,328,115,252,713,280/815,997,162.65
  6. Step 6: Final answer
    x = 395,011,318.68

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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.