Home / 825,519,585.76-1,139,182,871.32-449,177,721.92

Finding the Fourth Proportional to 825,519,585.76, 1,139,182,871.32 and 449,177,721.92

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Solution

The fourth proportional to 825,519,585.76, 1,139,182,871.32 and 449,177,721.92 is: 619,846,670.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,519,585.76 : 1,139,182,871.32 = 449,177,721.92 : x
  2. Step 2: Convert to fraction form
    825,519,585.76/1,139,182,871.32 = 449,177,721.92/x
  3. Step 3: Cross multiply
    825,519,585.76x = 1,139,182,871.32 × 449,177,721.92
  4. Step 4: Simplify right side
    825,519,585.76x = 511,695,566,989,802,112
  5. Step 5: Solve for x
    x = 511,695,566,989,802,112/825,519,585.76
  6. Step 6: Final answer
    x = 619,846,670.89

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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.