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Finding the Fourth Proportional to 666,288.65, 919,475.46 and 360,365.33

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Solution

The fourth proportional to 666,288.65, 919,475.46 and 360,365.33 is: 497,302.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,288.65 : 919,475.46 = 360,365.33 : x
  2. Step 2: Convert to fraction form
    666,288.65/919,475.46 = 360,365.33/x
  3. Step 3: Cross multiply
    666,288.65x = 919,475.46 × 360,365.33
  4. Step 4: Simplify right side
    666,288.65x = 331,347,079,868.49
  5. Step 5: Solve for x
    x = 331,347,079,868.49/666,288.65
  6. Step 6: Final answer
    x = 497,302.60

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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.