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Finding the Fourth Proportional to 618,488.30, 926,157.26 and 407,486.54

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Solution

The fourth proportional to 618,488.30, 926,157.26 and 407,486.54 is: 610,192.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,488.30 : 926,157.26 = 407,486.54 : x
  2. Step 2: Convert to fraction form
    618,488.30/926,157.26 = 407,486.54/x
  3. Step 3: Cross multiply
    618,488.30x = 926,157.26 × 407,486.54
  4. Step 4: Simplify right side
    618,488.30x = 377,396,613,761.21
  5. Step 5: Solve for x
    x = 377,396,613,761.21/618,488.30
  6. Step 6: Final answer
    x = 610,192.01

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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.