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Finding the Fourth Proportional to 434,722.36, 599,613.42 and 420,091.24

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Solution

The fourth proportional to 434,722.36, 599,613.42 and 420,091.24 is: 579,432.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,722.36 : 599,613.42 = 420,091.24 : x
  2. Step 2: Convert to fraction form
    434,722.36/599,613.42 = 420,091.24/x
  3. Step 3: Cross multiply
    434,722.36x = 599,613.42 × 420,091.24
  4. Step 4: Simplify right side
    434,722.36x = 251,892,345,128.44
  5. Step 5: Solve for x
    x = 251,892,345,128.44/434,722.36
  6. Step 6: Final answer
    x = 579,432.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.