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Finding the Fourth Proportional to 458,131.80, 686,031.30 and 437,136.60

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Solution

The fourth proportional to 458,131.80, 686,031.30 and 437,136.60 is: 654,591.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,131.80 : 686,031.30 = 437,136.60 : x
  2. Step 2: Convert to fraction form
    458,131.80/686,031.30 = 437,136.60/x
  3. Step 3: Cross multiply
    458,131.80x = 686,031.30 × 437,136.60
  4. Step 4: Simplify right side
    458,131.80x = 299,889,389,975.58
  5. Step 5: Solve for x
    x = 299,889,389,975.58/458,131.80
  6. Step 6: Final answer
    x = 654,591.95

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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.