Home / 767,681.80-1,151,522.70-394,433.80

Finding the Fourth Proportional to 767,681.80, 1,151,522.70 and 394,433.80

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Solution

The fourth proportional to 767,681.80, 1,151,522.70 and 394,433.80 is: 591,650.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,681.80 : 1,151,522.70 = 394,433.80 : x
  2. Step 2: Convert to fraction form
    767,681.80/1,151,522.70 = 394,433.80/x
  3. Step 3: Cross multiply
    767,681.80x = 1,151,522.70 × 394,433.80
  4. Step 4: Simplify right side
    767,681.80x = 454,199,474,347.26
  5. Step 5: Solve for x
    x = 454,199,474,347.26/767,681.80
  6. Step 6: Final answer
    x = 591,650.70

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Double scale
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Similar ratio
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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.