Home / 563,638.70-777,805.31-321,916.28

Finding the Fourth Proportional to 563,638.70, 777,805.31 and 321,916.28

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Solution

The fourth proportional to 563,638.70, 777,805.31 and 321,916.28 is: 444,235.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,638.70 : 777,805.31 = 321,916.28 : x
  2. Step 2: Convert to fraction form
    563,638.70/777,805.31 = 321,916.28/x
  3. Step 3: Cross multiply
    563,638.70x = 777,805.31 × 321,916.28
  4. Step 4: Simplify right side
    563,638.70x = 250,388,186,460.84
  5. Step 5: Solve for x
    x = 250,388,186,460.84/563,638.70
  6. Step 6: Final answer
    x = 444,235.27

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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.