Home / 728,999.13-1,006,019.43-406,709.33

Finding the Fourth Proportional to 728,999.13, 1,006,019.43 and 406,709.33

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Solution

The fourth proportional to 728,999.13, 1,006,019.43 and 406,709.33 is: 561,259.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,999.13 : 1,006,019.43 = 406,709.33 : x
  2. Step 2: Convert to fraction form
    728,999.13/1,006,019.43 = 406,709.33/x
  3. Step 3: Cross multiply
    728,999.13x = 1,006,019.43 × 406,709.33
  4. Step 4: Simplify right side
    728,999.13x = 409,157,486,332.28
  5. Step 5: Solve for x
    x = 409,157,486,332.28/728,999.13
  6. Step 6: Final answer
    x = 561,259.23

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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.