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Finding the Fourth Proportional to 503,326.74, 694,619.64 and 288,502.59

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Solution

The fourth proportional to 503,326.74, 694,619.64 and 288,502.59 is: 398,150.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,326.74 : 694,619.64 = 288,502.59 : x
  2. Step 2: Convert to fraction form
    503,326.74/694,619.64 = 288,502.59/x
  3. Step 3: Cross multiply
    503,326.74x = 694,619.64 × 288,502.59
  4. Step 4: Simplify right side
    503,326.74x = 200,399,565,204.87
  5. Step 5: Solve for x
    x = 200,399,565,204.87/503,326.74
  6. Step 6: Final answer
    x = 398,150.05

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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.