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Finding the Fourth Proportional to 453,495.80, 626,687.34 and 340,121.72

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Solution

The fourth proportional to 453,495.80, 626,687.34 and 340,121.72 is: 470,015.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,495.80 : 626,687.34 = 340,121.72 : x
  2. Step 2: Convert to fraction form
    453,495.80/626,687.34 = 340,121.72/x
  3. Step 3: Cross multiply
    453,495.80x = 626,687.34 × 340,121.72
  4. Step 4: Simplify right side
    453,495.80x = 213,149,975,983.03
  5. Step 5: Solve for x
    x = 213,149,975,983.03/453,495.80
  6. Step 6: Final answer
    x = 470,015.33

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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.