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Finding the Fourth Proportional to 577,136.70, 865,705.05 and 311,416.20

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Solution

The fourth proportional to 577,136.70, 865,705.05 and 311,416.20 is: 467,124.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,136.70 : 865,705.05 = 311,416.20 : x
  2. Step 2: Convert to fraction form
    577,136.70/865,705.05 = 311,416.20/x
  3. Step 3: Cross multiply
    577,136.70x = 865,705.05 × 311,416.20
  4. Step 4: Simplify right side
    577,136.70x = 269,594,576,991.81
  5. Step 5: Solve for x
    x = 269,594,576,991.81/577,136.70
  6. Step 6: Final answer
    x = 467,124.30

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Similar ratio
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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.