Home / 728,999.09-1,006,017.27-406,689.96

Finding the Fourth Proportional to 728,999.09, 1,006,017.27 and 406,689.96

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Solution

The fourth proportional to 728,999.09, 1,006,017.27 and 406,689.96 is: 561,231.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,999.09 : 1,006,017.27 = 406,689.96 : x
  2. Step 2: Convert to fraction form
    728,999.09/1,006,017.27 = 406,689.96/x
  3. Step 3: Cross multiply
    728,999.09x = 1,006,017.27 × 406,689.96
  4. Step 4: Simplify right side
    728,999.09x = 409,137,125,543.09
  5. Step 5: Solve for x
    x = 409,137,125,543.09/728,999.09
  6. Step 6: Final answer
    x = 561,231.33

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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.