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Finding the Fourth Proportional to 516,985.60, 773,728.80 and 516,985.60

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Solution

The fourth proportional to 516,985.60, 773,728.80 and 516,985.60 is: 773,728.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,985.60 : 773,728.80 = 516,985.60 : x
  2. Step 2: Convert to fraction form
    516,985.60/773,728.80 = 516,985.60/x
  3. Step 3: Cross multiply
    516,985.60x = 773,728.80 × 516,985.60
  4. Step 4: Simplify right side
    516,985.60x = 400,006,647,905.28
  5. Step 5: Solve for x
    x = 400,006,647,905.28/516,985.60
  6. Step 6: Final answer
    x = 773,728.80

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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.