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Finding the Fourth Proportional to 579,613.60, 869,679.60 and 205,904.80

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Solution

The fourth proportional to 579,613.60, 869,679.60 and 205,904.80 is: 308,949.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,613.60 : 869,679.60 = 205,904.80 : x
  2. Step 2: Convert to fraction form
    579,613.60/869,679.60 = 205,904.80/x
  3. Step 3: Cross multiply
    579,613.60x = 869,679.60 × 205,904.80
  4. Step 4: Simplify right side
    579,613.60x = 179,071,204,102.08
  5. Step 5: Solve for x
    x = 179,071,204,102.08/579,613.60
  6. Step 6: Final answer
    x = 308,949.28

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Double scale
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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.