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Finding the Fourth Proportional to 693,285.60, 1,040,079.60 and 393,909.60

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Solution

The fourth proportional to 693,285.60, 1,040,079.60 and 393,909.60 is: 590,950.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,285.60 : 1,040,079.60 = 393,909.60 : x
  2. Step 2: Convert to fraction form
    693,285.60/1,040,079.60 = 393,909.60/x
  3. Step 3: Cross multiply
    693,285.60x = 1,040,079.60 × 393,909.60
  4. Step 4: Simplify right side
    693,285.60x = 409,697,339,204.16
  5. Step 5: Solve for x
    x = 409,697,339,204.16/693,285.60
  6. Step 6: Final answer
    x = 590,950.31

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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.