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Finding the Fourth Proportional to 458,500.80, 634,168.80 and 405,508.80

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Solution

The fourth proportional to 458,500.80, 634,168.80 and 405,508.80 is: 560,873.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,500.80 : 634,168.80 = 405,508.80 : x
  2. Step 2: Convert to fraction form
    458,500.80/634,168.80 = 405,508.80/x
  3. Step 3: Cross multiply
    458,500.80x = 634,168.80 × 405,508.80
  4. Step 4: Simplify right side
    458,500.80x = 257,161,029,085.44
  5. Step 5: Solve for x
    x = 257,161,029,085.44/458,500.80
  6. Step 6: Final answer
    x = 560,873.68

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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.