Home / 1,112,140.76-1,668,219.95-728,213.22

Finding the Fourth Proportional to 1,112,140.76, 1,668,219.95 and 728,213.22

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Solution

The fourth proportional to 1,112,140.76, 1,668,219.95 and 728,213.22 is: 1,092,325.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,140.76 : 1,668,219.95 = 728,213.22 : x
  2. Step 2: Convert to fraction form
    1,112,140.76/1,668,219.95 = 728,213.22/x
  3. Step 3: Cross multiply
    1,112,140.76x = 1,668,219.95 × 728,213.22
  4. Step 4: Simplify right side
    1,112,140.76x = 1,214,819,823,278.27
  5. Step 5: Solve for x
    x = 1,214,819,823,278.27/1,112,140.76
  6. Step 6: Final answer
    x = 1,092,325.61

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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.