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Finding the Fourth Proportional to 522,055.70, 783,083.55 and 285,859.70

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Solution

The fourth proportional to 522,055.70, 783,083.55 and 285,859.70 is: 428,789.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,055.70 : 783,083.55 = 285,859.70 : x
  2. Step 2: Convert to fraction form
    522,055.70/783,083.55 = 285,859.70/x
  3. Step 3: Cross multiply
    522,055.70x = 783,083.55 × 285,859.70
  4. Step 4: Simplify right side
    522,055.70x = 223,852,028,677.94
  5. Step 5: Solve for x
    x = 223,852,028,677.94/522,055.70
  6. Step 6: Final answer
    x = 428,789.55

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Double scale
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Similar ratio
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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.