Home / 791,810.40-1,188,007.20-318,835.20

Finding the Fourth Proportional to 791,810.40, 1,188,007.20 and 318,835.20

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Solution

The fourth proportional to 791,810.40, 1,188,007.20 and 318,835.20 is: 478,370.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,810.40 : 1,188,007.20 = 318,835.20 : x
  2. Step 2: Convert to fraction form
    791,810.40/1,188,007.20 = 318,835.20/x
  3. Step 3: Cross multiply
    791,810.40x = 1,188,007.20 × 318,835.20
  4. Step 4: Simplify right side
    791,810.40x = 378,778,513,213.44
  5. Step 5: Solve for x
    x = 378,778,513,213.44/791,810.40
  6. Step 6: Final answer
    x = 478,370.22

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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.