Home / 728,999.70-1,090,000.35-540,042.90

Finding the Fourth Proportional to 728,999.70, 1,090,000.35 and 540,042.90

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Solution

The fourth proportional to 728,999.70, 1,090,000.35 and 540,042.90 is: 807,472.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,999.70 : 1,090,000.35 = 540,042.90 : x
  2. Step 2: Convert to fraction form
    728,999.70/1,090,000.35 = 540,042.90/x
  3. Step 3: Cross multiply
    728,999.70x = 1,090,000.35 × 540,042.90
  4. Step 4: Simplify right side
    728,999.70x = 588,646,950,015.02
  5. Step 5: Solve for x
    x = 588,646,950,015.02/728,999.70
  6. Step 6: Final answer
    x = 807,472.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.