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Finding the Fourth Proportional to 771,100.80, 1,156,593.60 and 321,705.60

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Solution

The fourth proportional to 771,100.80, 1,156,593.60 and 321,705.60 is: 482,534.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,100.80 : 1,156,593.60 = 321,705.60 : x
  2. Step 2: Convert to fraction form
    771,100.80/1,156,593.60 = 321,705.60/x
  3. Step 3: Cross multiply
    771,100.80x = 1,156,593.60 × 321,705.60
  4. Step 4: Simplify right side
    771,100.80x = 372,082,638,044.16
  5. Step 5: Solve for x
    x = 372,082,638,044.16/771,100.80
  6. Step 6: Final answer
    x = 482,534.37

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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.