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Finding the Fourth Proportional to 5,687,958.40, 8,531,937.60 and 5,128,086.40

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Solution

The fourth proportional to 5,687,958.40, 8,531,937.60 and 5,128,086.40 is: 7,692,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,687,958.40 : 8,531,937.60 = 5,128,086.40 : x
  2. Step 2: Convert to fraction form
    5,687,958.40/8,531,937.60 = 5,128,086.40/x
  3. Step 3: Cross multiply
    5,687,958.40x = 8,531,937.60 × 5,128,086.40
  4. Step 4: Simplify right side
    5,687,958.40x = 43,752,513,172,208.64
  5. Step 5: Solve for x
    x = 43,752,513,172,208.64/5,687,958.40
  6. Step 6: Final answer
    x = 7,692,129.60

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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.