Home / 728,670.11-1,005,577.67-406,345.59

Finding the Fourth Proportional to 728,670.11, 1,005,577.67 and 406,345.59

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Solution

The fourth proportional to 728,670.11, 1,005,577.67 and 406,345.59 is: 560,764.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,670.11 : 1,005,577.67 = 406,345.59 : x
  2. Step 2: Convert to fraction form
    728,670.11/1,005,577.67 = 406,345.59/x
  3. Step 3: Cross multiply
    728,670.11x = 1,005,577.67 × 406,345.59
  4. Step 4: Simplify right side
    728,670.11x = 408,612,052,622.84
  5. Step 5: Solve for x
    x = 408,612,052,622.84/728,670.11
  6. Step 6: Final answer
    x = 560,764.12

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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.