Home / 406,985.72-560,993.18-320,804.96

Finding the Fourth Proportional to 406,985.72, 560,993.18 and 320,804.96

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Solution

The fourth proportional to 406,985.72, 560,993.18 and 320,804.96 is: 442,200.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,985.72 : 560,993.18 = 320,804.96 : x
  2. Step 2: Convert to fraction form
    406,985.72/560,993.18 = 320,804.96/x
  3. Step 3: Cross multiply
    406,985.72x = 560,993.18 × 320,804.96
  4. Step 4: Simplify right side
    406,985.72x = 179,969,390,261.18
  5. Step 5: Solve for x
    x = 179,969,390,261.18/406,985.72
  6. Step 6: Final answer
    x = 442,200.75

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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.