Home / 1,188,909.68-1,640,695.38-679,623.02

Finding the Fourth Proportional to 1,188,909.68, 1,640,695.38 and 679,623.02

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Solution

The fourth proportional to 1,188,909.68, 1,640,695.38 and 679,623.02 is: 937,879.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,909.68 : 1,640,695.38 = 679,623.02 : x
  2. Step 2: Convert to fraction form
    1,188,909.68/1,640,695.38 = 679,623.02/x
  3. Step 3: Cross multiply
    1,188,909.68x = 1,640,695.38 × 679,623.02
  4. Step 4: Simplify right side
    1,188,909.68x = 1,115,054,349,055.65
  5. Step 5: Solve for x
    x = 1,115,054,349,055.65/1,188,909.68
  6. Step 6: Final answer
    x = 937,879.78

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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.