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Finding the Fourth Proportional to 668,887.20, 1,004,969.20 and 502,999.20

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Solution

The fourth proportional to 668,887.20, 1,004,969.20 and 502,999.20 is: 755,730.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,887.20 : 1,004,969.20 = 502,999.20 : x
  2. Step 2: Convert to fraction form
    668,887.20/1,004,969.20 = 502,999.20/x
  3. Step 3: Cross multiply
    668,887.20x = 1,004,969.20 × 502,999.20
  4. Step 4: Simplify right side
    668,887.20x = 505,498,703,624.64
  5. Step 5: Solve for x
    x = 505,498,703,624.64/668,887.20
  6. Step 6: Final answer
    x = 755,730.87

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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.