Home / 740,420.85-1,109,791.67-340,234.71

Finding the Fourth Proportional to 740,420.85, 1,109,791.67 and 340,234.71

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Solution

The fourth proportional to 740,420.85, 1,109,791.67 and 340,234.71 is: 509,966.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,420.85 : 1,109,791.67 = 340,234.71 : x
  2. Step 2: Convert to fraction form
    740,420.85/1,109,791.67 = 340,234.71/x
  3. Step 3: Cross multiply
    740,420.85x = 1,109,791.67 × 340,234.71
  4. Step 4: Simplify right side
    740,420.85x = 377,589,647,002.87
  5. Step 5: Solve for x
    x = 377,589,647,002.87/740,420.85
  6. Step 6: Final answer
    x = 509,966.25

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1.5x scale

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.