Home / 563,135.31-776,936.47-321,247.71

Finding the Fourth Proportional to 563,135.31, 776,936.47 and 321,247.71

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Solution

The fourth proportional to 563,135.31, 776,936.47 and 321,247.71 is: 443,213.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,135.31 : 776,936.47 = 321,247.71 : x
  2. Step 2: Convert to fraction form
    563,135.31/776,936.47 = 321,247.71/x
  3. Step 3: Cross multiply
    563,135.31x = 776,936.47 × 321,247.71
  4. Step 4: Simplify right side
    563,135.31x = 249,589,061,802.98
  5. Step 5: Solve for x
    x = 249,589,061,802.98/563,135.31
  6. Step 6: Final answer
    x = 443,213.30

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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.