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Finding the Fourth Proportional to 720,136.74, 1,080,883.08 and 365,405.34

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Solution

The fourth proportional to 720,136.74, 1,080,883.08 and 365,405.34 is: 548,452.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,136.74 : 1,080,883.08 = 365,405.34 : x
  2. Step 2: Convert to fraction form
    720,136.74/1,080,883.08 = 365,405.34/x
  3. Step 3: Cross multiply
    720,136.74x = 1,080,883.08 × 365,405.34
  4. Step 4: Simplify right side
    720,136.74x = 394,960,449,347.65
  5. Step 5: Solve for x
    x = 394,960,449,347.65/720,136.74
  6. Step 6: Final answer
    x = 548,452.02

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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.