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Finding the Fourth Proportional to 420,575.83, 578,921.48 and 366,765.91

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Solution

The fourth proportional to 420,575.83, 578,921.48 and 366,765.91 is: 504,852.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,575.83 : 578,921.48 = 366,765.91 : x
  2. Step 2: Convert to fraction form
    420,575.83/578,921.48 = 366,765.91/x
  3. Step 3: Cross multiply
    420,575.83x = 578,921.48 × 366,765.91
  4. Step 4: Simplify right side
    420,575.83x = 212,328,661,524.99
  5. Step 5: Solve for x
    x = 212,328,661,524.99/420,575.83
  6. Step 6: Final answer
    x = 504,852.27

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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.