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Finding the Fourth Proportional to 572,689.64, 790,265.62 and 330,987.87

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Solution

The fourth proportional to 572,689.64, 790,265.62 and 330,987.87 is: 456,736.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,689.64 : 790,265.62 = 330,987.87 : x
  2. Step 2: Convert to fraction form
    572,689.64/790,265.62 = 330,987.87/x
  3. Step 3: Cross multiply
    572,689.64x = 790,265.62 × 330,987.87
  4. Step 4: Simplify right side
    572,689.64x = 261,568,332,849.96
  5. Step 5: Solve for x
    x = 261,568,332,849.96/572,689.64
  6. Step 6: Final answer
    x = 456,736.62

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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.