Home / 469,515.47-647,940.18-288,136.63

Finding the Fourth Proportional to 469,515.47, 647,940.18 and 288,136.63

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Solution

The fourth proportional to 469,515.47, 647,940.18 and 288,136.63 is: 397,633.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,515.47 : 647,940.18 = 288,136.63 : x
  2. Step 2: Convert to fraction form
    469,515.47/647,940.18 = 288,136.63/x
  3. Step 3: Cross multiply
    469,515.47x = 647,940.18 × 288,136.63
  4. Step 4: Simplify right side
    469,515.47x = 186,695,299,367.46
  5. Step 5: Solve for x
    x = 186,695,299,367.46/469,515.47
  6. Step 6: Final answer
    x = 397,633.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.