Home / 563,015.43-777,017.15-321,334.61

Finding the Fourth Proportional to 563,015.43, 777,017.15 and 321,334.61

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Solution

The fourth proportional to 563,015.43, 777,017.15 and 321,334.61 is: 443,473.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,015.43 : 777,017.15 = 321,334.61 : x
  2. Step 2: Convert to fraction form
    563,015.43/777,017.15 = 321,334.61/x
  3. Step 3: Cross multiply
    563,015.43x = 777,017.15 × 321,334.61
  4. Step 4: Simplify right side
    563,015.43x = 249,682,502,858.56
  5. Step 5: Solve for x
    x = 249,682,502,858.56/563,015.43
  6. Step 6: Final answer
    x = 443,473.64

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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.