Home / 693,149.54-1,039,870.10-393,768.68

Finding the Fourth Proportional to 693,149.54, 1,039,870.10 and 393,768.68

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Solution

The fourth proportional to 693,149.54, 1,039,870.10 and 393,768.68 is: 590,735.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,149.54 : 1,039,870.10 = 393,768.68 : x
  2. Step 2: Convert to fraction form
    693,149.54/1,039,870.10 = 393,768.68/x
  3. Step 3: Cross multiply
    693,149.54x = 1,039,870.10 × 393,768.68
  4. Step 4: Simplify right side
    693,149.54x = 409,468,272,433.54
  5. Step 5: Solve for x
    x = 409,468,272,433.54/693,149.54
  6. Step 6: Final answer
    x = 590,735.84

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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.