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Finding the Fourth Proportional to 528,418.50, 792,461.25 and 173,349.78

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Solution

The fourth proportional to 528,418.50, 792,461.25 and 173,349.78 is: 259,970.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,418.50 : 792,461.25 = 173,349.78 : x
  2. Step 2: Convert to fraction form
    528,418.50/792,461.25 = 173,349.78/x
  3. Step 3: Cross multiply
    528,418.50x = 792,461.25 × 173,349.78
  4. Step 4: Simplify right side
    528,418.50x = 137,372,983,346.03
  5. Step 5: Solve for x
    x = 137,372,983,346.03/528,418.50
  6. Step 6: Final answer
    x = 259,970.05

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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.