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Finding the Fourth Proportional to 660,764.34, 911,781.66 and 366,406.66

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Solution

The fourth proportional to 660,764.34, 911,781.66 and 366,406.66 is: 505,600.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,764.34 : 911,781.66 = 366,406.66 : x
  2. Step 2: Convert to fraction form
    660,764.34/911,781.66 = 366,406.66/x
  3. Step 3: Cross multiply
    660,764.34x = 911,781.66 × 366,406.66
  4. Step 4: Simplify right side
    660,764.34x = 334,082,873,605.87
  5. Step 5: Solve for x
    x = 334,082,873,605.87/660,764.34
  6. Step 6: Final answer
    x = 505,600.64

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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.