Home / 678,109.02-935,757.27-406,188.06

Finding the Fourth Proportional to 678,109.02, 935,757.27 and 406,188.06

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Solution

The fourth proportional to 678,109.02, 935,757.27 and 406,188.06 is: 560,519.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,109.02 : 935,757.27 = 406,188.06 : x
  2. Step 2: Convert to fraction form
    678,109.02/935,757.27 = 406,188.06/x
  3. Step 3: Cross multiply
    678,109.02x = 935,757.27 × 406,188.06
  4. Step 4: Simplify right side
    678,109.02x = 380,093,430,132.20
  5. Step 5: Solve for x
    x = 380,093,430,132.20/678,109.02
  6. Step 6: Final answer
    x = 560,519.65

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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.