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Finding the Fourth Proportional to 440,136.90, 660,205.35 and 440,136.90

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Solution

The fourth proportional to 440,136.90, 660,205.35 and 440,136.90 is: 660,205.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,136.90 : 660,205.35 = 440,136.90 : x
  2. Step 2: Convert to fraction form
    440,136.90/660,205.35 = 440,136.90/x
  3. Step 3: Cross multiply
    440,136.90x = 660,205.35 × 440,136.90
  4. Step 4: Simplify right side
    440,136.90x = 290,580,736,112.42
  5. Step 5: Solve for x
    x = 290,580,736,112.42/440,136.90
  6. Step 6: Final answer
    x = 660,205.35

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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.