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Finding the Fourth Proportional to 479,216.40, 717,328.80 and 352,998.96

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Solution

The fourth proportional to 479,216.40, 717,328.80 and 352,998.96 is: 528,396.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,216.40 : 717,328.80 = 352,998.96 : x
  2. Step 2: Convert to fraction form
    479,216.40/717,328.80 = 352,998.96/x
  3. Step 3: Cross multiply
    479,216.40x = 717,328.80 × 352,998.96
  4. Step 4: Simplify right side
    479,216.40x = 253,216,320,378.05
  5. Step 5: Solve for x
    x = 253,216,320,378.05/479,216.40
  6. Step 6: Final answer
    x = 528,396.61

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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.