Home / 563,121.81-776,917.89-321,234.12

Finding the Fourth Proportional to 563,121.81, 776,917.89 and 321,234.12

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Solution

The fourth proportional to 563,121.81, 776,917.89 and 321,234.12 is: 443,194.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,121.81 : 776,917.89 = 321,234.12 : x
  2. Step 2: Convert to fraction form
    563,121.81/776,917.89 = 321,234.12/x
  3. Step 3: Cross multiply
    563,121.81x = 776,917.89 × 321,234.12
  4. Step 4: Simplify right side
    563,121.81x = 249,572,534,706.41
  5. Step 5: Solve for x
    x = 249,572,534,706.41/563,121.81
  6. Step 6: Final answer
    x = 443,194.58

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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.