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Finding the Fourth Proportional to 646,967.48, 970,566.44 and 220,479.66

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Solution

The fourth proportional to 646,967.48, 970,566.44 and 220,479.66 is: 330,758.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,967.48 : 970,566.44 = 220,479.66 : x
  2. Step 2: Convert to fraction form
    646,967.48/970,566.44 = 220,479.66/x
  3. Step 3: Cross multiply
    646,967.48x = 970,566.44 × 220,479.66
  4. Step 4: Simplify right side
    646,967.48x = 213,990,157,596.21
  5. Step 5: Solve for x
    x = 213,990,157,596.21/646,967.48
  6. Step 6: Final answer
    x = 330,758.76

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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.