Home / 1,188,279.18-1,638,011.16-728,542.62

Finding the Fourth Proportional to 1,188,279.18, 1,638,011.16 and 728,542.62

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Solution

The fourth proportional to 1,188,279.18, 1,638,011.16 and 728,542.62 is: 1,004,276.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,279.18 : 1,638,011.16 = 728,542.62 : x
  2. Step 2: Convert to fraction form
    1,188,279.18/1,638,011.16 = 728,542.62/x
  3. Step 3: Cross multiply
    1,188,279.18x = 1,638,011.16 × 728,542.62
  4. Step 4: Simplify right side
    1,188,279.18x = 1,193,360,942,095.64
  5. Step 5: Solve for x
    x = 1,193,360,942,095.64/1,188,279.18
  6. Step 6: Final answer
    x = 1,004,276.57

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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.