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Finding the Fourth Proportional to 551,445.30, 825,785.55 and 440,853.30

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Solution

The fourth proportional to 551,445.30, 825,785.55 and 440,853.30 is: 660,174.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,445.30 : 825,785.55 = 440,853.30 : x
  2. Step 2: Convert to fraction form
    551,445.30/825,785.55 = 440,853.30/x
  3. Step 3: Cross multiply
    551,445.30x = 825,785.55 × 440,853.30
  4. Step 4: Simplify right side
    551,445.30x = 364,050,284,809.82
  5. Step 5: Solve for x
    x = 364,050,284,809.82/551,445.30
  6. Step 6: Final answer
    x = 660,174.79

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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.