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Finding the Fourth Proportional to 540,672.26, 811,131.39 and 287,819.51

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Solution

The fourth proportional to 540,672.26, 811,131.39 and 287,819.51 is: 431,794.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,672.26 : 811,131.39 = 287,819.51 : x
  2. Step 2: Convert to fraction form
    540,672.26/811,131.39 = 287,819.51/x
  3. Step 3: Cross multiply
    540,672.26x = 811,131.39 × 287,819.51
  4. Step 4: Simplify right side
    540,672.26x = 233,459,435,159.76
  5. Step 5: Solve for x
    x = 233,459,435,159.76/540,672.26
  6. Step 6: Final answer
    x = 431,794.74

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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.