Home / 728,999.96-1,006,020.58-406,710.12

Finding the Fourth Proportional to 728,999.96, 1,006,020.58 and 406,710.12

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Solution

The fourth proportional to 728,999.96, 1,006,020.58 and 406,710.12 is: 561,260.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,999.96 : 1,006,020.58 = 406,710.12 : x
  2. Step 2: Convert to fraction form
    728,999.96/1,006,020.58 = 406,710.12/x
  3. Step 3: Cross multiply
    728,999.96x = 1,006,020.58 × 406,710.12
  4. Step 4: Simplify right side
    728,999.96x = 409,158,749,797.49
  5. Step 5: Solve for x
    x = 409,158,749,797.49/728,999.96
  6. Step 6: Final answer
    x = 561,260.32

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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.