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Finding the Fourth Proportional to 526,504.80, 788,590.80 and 407,791.20

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Solution

The fourth proportional to 526,504.80, 788,590.80 and 407,791.20 is: 610,783.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,504.80 : 788,590.80 = 407,791.20 : x
  2. Step 2: Convert to fraction form
    526,504.80/788,590.80 = 407,791.20/x
  3. Step 3: Cross multiply
    526,504.80x = 788,590.80 × 407,791.20
  4. Step 4: Simplify right side
    526,504.80x = 321,580,388,640.96
  5. Step 5: Solve for x
    x = 321,580,388,640.96/526,504.80
  6. Step 6: Final answer
    x = 610,783.39

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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.