Home / 728,697.06-1,005,603.73-406,428.03

Finding the Fourth Proportional to 728,697.06, 1,005,603.73 and 406,428.03

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Solution

The fourth proportional to 728,697.06, 1,005,603.73 and 406,428.03 is: 560,871.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,697.06 : 1,005,603.73 = 406,428.03 : x
  2. Step 2: Convert to fraction form
    728,697.06/1,005,603.73 = 406,428.03/x
  3. Step 3: Cross multiply
    728,697.06x = 1,005,603.73 × 406,428.03
  4. Step 4: Simplify right side
    728,697.06x = 408,705,541,928.48
  5. Step 5: Solve for x
    x = 408,705,541,928.48/728,697.06
  6. Step 6: Final answer
    x = 560,871.68

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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.