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Finding the Fourth Proportional to 563,648.40, 777,841.20 and 321,963.12

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Solution

The fourth proportional to 563,648.40, 777,841.20 and 321,963.12 is: 444,312.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,648.40 : 777,841.20 = 321,963.12 : x
  2. Step 2: Convert to fraction form
    563,648.40/777,841.20 = 321,963.12/x
  3. Step 3: Cross multiply
    563,648.40x = 777,841.20 × 321,963.12
  4. Step 4: Simplify right side
    563,648.40x = 250,436,179,616.54
  5. Step 5: Solve for x
    x = 250,436,179,616.54/563,648.40
  6. Step 6: Final answer
    x = 444,312.77

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1.5x scale

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.