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Finding the Fourth Proportional to 613,347.03, 920,414.21 and 297,631.71

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Solution

The fourth proportional to 613,347.03, 920,414.21 and 297,631.71 is: 446,638.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,347.03 : 920,414.21 = 297,631.71 : x
  2. Step 2: Convert to fraction form
    613,347.03/920,414.21 = 297,631.71/x
  3. Step 3: Cross multiply
    613,347.03x = 920,414.21 × 297,631.71
  4. Step 4: Simplify right side
    613,347.03x = 273,944,453,742.44
  5. Step 5: Solve for x
    x = 273,944,453,742.44/613,347.03
  6. Step 6: Final answer
    x = 446,638.59

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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.