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Finding the Fourth Proportional to 478,913.65, 717,885.38 and 310,540.77

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Solution

The fourth proportional to 478,913.65, 717,885.38 and 310,540.77 is: 465,496.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,913.65 : 717,885.38 = 310,540.77 : x
  2. Step 2: Convert to fraction form
    478,913.65/717,885.38 = 310,540.77/x
  3. Step 3: Cross multiply
    478,913.65x = 717,885.38 × 310,540.77
  4. Step 4: Simplify right side
    478,913.65x = 222,932,679,453.30
  5. Step 5: Solve for x
    x = 222,932,679,453.30/478,913.65
  6. Step 6: Final answer
    x = 465,496.61

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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.