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Finding the Fourth Proportional to 521,136.45, 718,185.42 and 417,653.10

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Solution

The fourth proportional to 521,136.45, 718,185.42 and 417,653.10 is: 575,573.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,136.45 : 718,185.42 = 417,653.10 : x
  2. Step 2: Convert to fraction form
    521,136.45/718,185.42 = 417,653.10/x
  3. Step 3: Cross multiply
    521,136.45x = 718,185.42 × 417,653.10
  4. Step 4: Simplify right side
    521,136.45x = 299,952,367,037.80
  5. Step 5: Solve for x
    x = 299,952,367,037.80/521,136.45
  6. Step 6: Final answer
    x = 575,573.57

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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.