Home / 782,044.65-1,078,665.08-717,721.64

Finding the Fourth Proportional to 782,044.65, 1,078,665.08 and 717,721.64

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Solution

The fourth proportional to 782,044.65, 1,078,665.08 and 717,721.64 is: 989,945.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,044.65 : 1,078,665.08 = 717,721.64 : x
  2. Step 2: Convert to fraction form
    782,044.65/1,078,665.08 = 717,721.64/x
  3. Step 3: Cross multiply
    782,044.65x = 1,078,665.08 × 717,721.64
  4. Step 4: Simplify right side
    782,044.65x = 774,181,261,246.40
  5. Step 5: Solve for x
    x = 774,181,261,246.40/782,044.65
  6. Step 6: Final answer
    x = 989,945.09

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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.