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Finding the Fourth Proportional to 572,315.22, 858,491.11 and 287,850.51

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Solution

The fourth proportional to 572,315.22, 858,491.11 and 287,850.51 is: 431,784.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,315.22 : 858,491.11 = 287,850.51 : x
  2. Step 2: Convert to fraction form
    572,315.22/858,491.11 = 287,850.51/x
  3. Step 3: Cross multiply
    572,315.22x = 858,491.11 × 287,850.51
  4. Step 4: Simplify right side
    572,315.22x = 247,117,102,584.62
  5. Step 5: Solve for x
    x = 247,117,102,584.62/572,315.22
  6. Step 6: Final answer
    x = 431,784.96

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Double scale
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Similar ratio
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1.5x scale

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.