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Finding the Fourth Proportional to 617,314.60, 851,889.54 and 349,052.20

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Solution

The fourth proportional to 617,314.60, 851,889.54 and 349,052.20 is: 481,689.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,314.60 : 851,889.54 = 349,052.20 : x
  2. Step 2: Convert to fraction form
    617,314.60/851,889.54 = 349,052.20/x
  3. Step 3: Cross multiply
    617,314.60x = 851,889.54 × 349,052.20
  4. Step 4: Simplify right side
    617,314.60x = 297,353,918,093.99
  5. Step 5: Solve for x
    x = 297,353,918,093.99/617,314.60
  6. Step 6: Final answer
    x = 481,689.43

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1.5x scale

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.