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Finding the Fourth Proportional to 572,561.70, 858,842.55 and 320,619.30

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Solution

The fourth proportional to 572,561.70, 858,842.55 and 320,619.30 is: 480,928.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,561.70 : 858,842.55 = 320,619.30 : x
  2. Step 2: Convert to fraction form
    572,561.70/858,842.55 = 320,619.30/x
  3. Step 3: Cross multiply
    572,561.70x = 858,842.55 × 320,619.30
  4. Step 4: Simplify right side
    572,561.70x = 275,361,497,191.22
  5. Step 5: Solve for x
    x = 275,361,497,191.22/572,561.70
  6. Step 6: Final answer
    x = 480,928.95

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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.