Home / 442,946.20-664,419.30-307,643.80

Finding the Fourth Proportional to 442,946.20, 664,419.30 and 307,643.80

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Solution

The fourth proportional to 442,946.20, 664,419.30 and 307,643.80 is: 461,465.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,946.20 : 664,419.30 = 307,643.80 : x
  2. Step 2: Convert to fraction form
    442,946.20/664,419.30 = 307,643.80/x
  3. Step 3: Cross multiply
    442,946.20x = 664,419.30 × 307,643.80
  4. Step 4: Simplify right side
    442,946.20x = 204,404,478,245.34
  5. Step 5: Solve for x
    x = 204,404,478,245.34/442,946.20
  6. Step 6: Final answer
    x = 461,465.70

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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.