Home / 1,128,920.40-1,691,998.20-497,163.60

Finding the Fourth Proportional to 1,128,920.40, 1,691,998.20 and 497,163.60

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Solution

The fourth proportional to 1,128,920.40, 1,691,998.20 and 497,163.60 is: 745,136.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,920.40 : 1,691,998.20 = 497,163.60 : x
  2. Step 2: Convert to fraction form
    1,128,920.40/1,691,998.20 = 497,163.60/x
  3. Step 3: Cross multiply
    1,128,920.40x = 1,691,998.20 × 497,163.60
  4. Step 4: Simplify right side
    1,128,920.40x = 841,199,916,305.52
  5. Step 5: Solve for x
    x = 841,199,916,305.52/1,128,920.40
  6. Step 6: Final answer
    x = 745,136.61

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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.