Home / 521,725.13-719,979.07-289,166.90

Finding the Fourth Proportional to 521,725.13, 719,979.07 and 289,166.90

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Solution

The fourth proportional to 521,725.13, 719,979.07 and 289,166.90 is: 399,049.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,725.13 : 719,979.07 = 289,166.90 : x
  2. Step 2: Convert to fraction form
    521,725.13/719,979.07 = 289,166.90/x
  3. Step 3: Cross multiply
    521,725.13x = 719,979.07 × 289,166.90
  4. Step 4: Simplify right side
    521,725.13x = 208,194,112,136.89
  5. Step 5: Solve for x
    x = 208,194,112,136.89/521,725.13
  6. Step 6: Final answer
    x = 399,049.42

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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.