Home / 543,209.47-749,721.84-313,725.50

Finding the Fourth Proportional to 543,209.47, 749,721.84 and 313,725.50

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Solution

The fourth proportional to 543,209.47, 749,721.84 and 313,725.50 is: 432,994.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,209.47 : 749,721.84 = 313,725.50 : x
  2. Step 2: Convert to fraction form
    543,209.47/749,721.84 = 313,725.50/x
  3. Step 3: Cross multiply
    543,209.47x = 749,721.84 × 313,725.50
  4. Step 4: Simplify right side
    543,209.47x = 235,206,861,218.48
  5. Step 5: Solve for x
    x = 235,206,861,218.48/543,209.47
  6. Step 6: Final answer
    x = 432,994.78

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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.