Home / 782,127.91-1,078,778.94-717,804.48

Finding the Fourth Proportional to 782,127.91, 1,078,778.94 and 717,804.48

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Solution

The fourth proportional to 782,127.91, 1,078,778.94 and 717,804.48 is: 990,058.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,127.91 : 1,078,778.94 = 717,804.48 : x
  2. Step 2: Convert to fraction form
    782,127.91/1,078,778.94 = 717,804.48/x
  3. Step 3: Cross multiply
    782,127.91x = 1,078,778.94 × 717,804.48
  4. Step 4: Simplify right side
    782,127.91x = 774,352,356,061.65
  5. Step 5: Solve for x
    x = 774,352,356,061.65/782,127.91
  6. Step 6: Final answer
    x = 990,058.47

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1.5x scale

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.