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Finding the Fourth Proportional to 617,315.60, 851,890.92 and 349,053.20

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Solution

The fourth proportional to 617,315.60, 851,890.92 and 349,053.20 is: 481,690.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,315.60 : 851,890.92 = 349,053.20 : x
  2. Step 2: Convert to fraction form
    617,315.60/851,890.92 = 349,053.20/x
  3. Step 3: Cross multiply
    617,315.60x = 851,890.92 × 349,053.20
  4. Step 4: Simplify right side
    617,315.60x = 297,355,251,676.94
  5. Step 5: Solve for x
    x = 297,355,251,676.94/617,315.60
  6. Step 6: Final answer
    x = 481,690.81

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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.