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Finding the Fourth Proportional to 579,683.43, 869,104.76 and 389,672.47

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Solution

The fourth proportional to 579,683.43, 869,104.76 and 389,672.47 is: 584,226.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,683.43 : 869,104.76 = 389,672.47 : x
  2. Step 2: Convert to fraction form
    579,683.43/869,104.76 = 389,672.47/x
  3. Step 3: Cross multiply
    579,683.43x = 869,104.76 × 389,672.47
  4. Step 4: Simplify right side
    579,683.43x = 338,666,195,371.01
  5. Step 5: Solve for x
    x = 338,666,195,371.01/579,683.43
  6. Step 6: Final answer
    x = 584,226.11

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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.