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Finding the Fourth Proportional to 399,077.80, 560,108.60 and 399,077.80

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Solution

The fourth proportional to 399,077.80, 560,108.60 and 399,077.80 is: 560,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,077.80 : 560,108.60 = 399,077.80 : x
  2. Step 2: Convert to fraction form
    399,077.80/560,108.60 = 399,077.80/x
  3. Step 3: Cross multiply
    399,077.80x = 560,108.60 × 399,077.80
  4. Step 4: Simplify right side
    399,077.80x = 223,526,907,849.08
  5. Step 5: Solve for x
    x = 223,526,907,849.08/399,077.80
  6. Step 6: Final answer
    x = 560,108.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.