Home / 406,979.10-560,983.86-320,798.34

Finding the Fourth Proportional to 406,979.10, 560,983.86 and 320,798.34

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Solution

The fourth proportional to 406,979.10, 560,983.86 and 320,798.34 is: 442,191.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,979.10 : 560,983.86 = 320,798.34 : x
  2. Step 2: Convert to fraction form
    406,979.10/560,983.86 = 320,798.34/x
  3. Step 3: Cross multiply
    406,979.10x = 560,983.86 × 320,798.34
  4. Step 4: Simplify right side
    406,979.10x = 179,962,691,054.79
  5. Step 5: Solve for x
    x = 179,962,691,054.79/406,979.10
  6. Step 6: Final answer
    x = 442,191.48

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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.