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Finding the Fourth Proportional to 573,845.80, 860,768.70 and 485,272.30

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Solution

The fourth proportional to 573,845.80, 860,768.70 and 485,272.30 is: 727,908.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,845.80 : 860,768.70 = 485,272.30 : x
  2. Step 2: Convert to fraction form
    573,845.80/860,768.70 = 485,272.30/x
  3. Step 3: Cross multiply
    573,845.80x = 860,768.70 × 485,272.30
  4. Step 4: Simplify right side
    573,845.80x = 417,707,206,817.01
  5. Step 5: Solve for x
    x = 417,707,206,817.01/573,845.80
  6. Step 6: Final answer
    x = 727,908.45

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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.