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Finding the Fourth Proportional to 578,640.80, 867,572.40 and 262,935.20

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Solution

The fourth proportional to 578,640.80, 867,572.40 and 262,935.20 is: 394,226.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,640.80 : 867,572.40 = 262,935.20 : x
  2. Step 2: Convert to fraction form
    578,640.80/867,572.40 = 262,935.20/x
  3. Step 3: Cross multiply
    578,640.80x = 867,572.40 × 262,935.20
  4. Step 4: Simplify right side
    578,640.80x = 228,115,322,508.48
  5. Step 5: Solve for x
    x = 228,115,322,508.48/578,640.80
  6. Step 6: Final answer
    x = 394,226.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.