Home / 690,772.30-1,036,158.45-192,136.30

Finding the Fourth Proportional to 690,772.30, 1,036,158.45 and 192,136.30

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Solution

The fourth proportional to 690,772.30, 1,036,158.45 and 192,136.30 is: 288,204.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,772.30 : 1,036,158.45 = 192,136.30 : x
  2. Step 2: Convert to fraction form
    690,772.30/1,036,158.45 = 192,136.30/x
  3. Step 3: Cross multiply
    690,772.30x = 1,036,158.45 × 192,136.30
  4. Step 4: Simplify right side
    690,772.30x = 199,083,650,796.74
  5. Step 5: Solve for x
    x = 199,083,650,796.74/690,772.30
  6. Step 6: Final answer
    x = 288,204.45

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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.