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Finding the Fourth Proportional to 451,533.80, 622,834.66 and 290,599.40

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Solution

The fourth proportional to 451,533.80, 622,834.66 and 290,599.40 is: 400,845.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,533.80 : 622,834.66 = 290,599.40 : x
  2. Step 2: Convert to fraction form
    451,533.80/622,834.66 = 290,599.40/x
  3. Step 3: Cross multiply
    451,533.80x = 622,834.66 × 290,599.40
  4. Step 4: Simplify right side
    451,533.80x = 180,995,378,495.20
  5. Step 5: Solve for x
    x = 180,995,378,495.20/451,533.80
  6. Step 6: Final answer
    x = 400,845.69

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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.