Home / 769,491.85-1,153,615.16-320,549.96

Finding the Fourth Proportional to 769,491.85, 1,153,615.16 and 320,549.96

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Solution

The fourth proportional to 769,491.85, 1,153,615.16 and 320,549.96 is: 480,565.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,491.85 : 1,153,615.16 = 320,549.96 : x
  2. Step 2: Convert to fraction form
    769,491.85/1,153,615.16 = 320,549.96/x
  3. Step 3: Cross multiply
    769,491.85x = 1,153,615.16 × 320,549.96
  4. Step 4: Simplify right side
    769,491.85x = 369,791,290,589.72
  5. Step 5: Solve for x
    x = 369,791,290,589.72/769,491.85
  6. Step 6: Final answer
    x = 480,565.57

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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.