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Finding the Fourth Proportional to 522,518.80, 783,583.80 and 206,910.40

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Solution

The fourth proportional to 522,518.80, 783,583.80 and 206,910.40 is: 310,288.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,518.80 : 783,583.80 = 206,910.40 : x
  2. Step 2: Convert to fraction form
    522,518.80/783,583.80 = 206,910.40/x
  3. Step 3: Cross multiply
    522,518.80x = 783,583.80 × 206,910.40
  4. Step 4: Simplify right side
    522,518.80x = 162,131,637,491.52
  5. Step 5: Solve for x
    x = 162,131,637,491.52/522,518.80
  6. Step 6: Final answer
    x = 310,288.62

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1.5x scale

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.