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Finding the Fourth Proportional to 394,978.80, 592,468.20 and 366,985.20

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Solution

The fourth proportional to 394,978.80, 592,468.20 and 366,985.20 is: 550,477.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,978.80 : 592,468.20 = 366,985.20 : x
  2. Step 2: Convert to fraction form
    394,978.80/592,468.20 = 366,985.20/x
  3. Step 3: Cross multiply
    394,978.80x = 592,468.20 × 366,985.20
  4. Step 4: Simplify right side
    394,978.80x = 217,427,060,870.64
  5. Step 5: Solve for x
    x = 217,427,060,870.64/394,978.80
  6. Step 6: Final answer
    x = 550,477.80

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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.