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Finding the Fourth Proportional to 479,478.80, 719,995.80 and 322,403.60

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Solution

The fourth proportional to 479,478.80, 719,995.80 and 322,403.60 is: 484,128.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,478.80 : 719,995.80 = 322,403.60 : x
  2. Step 2: Convert to fraction form
    479,478.80/719,995.80 = 322,403.60/x
  3. Step 3: Cross multiply
    479,478.80x = 719,995.80 × 322,403.60
  4. Step 4: Simplify right side
    479,478.80x = 232,129,237,904.88
  5. Step 5: Solve for x
    x = 232,129,237,904.88/479,478.80
  6. Step 6: Final answer
    x = 484,128.26

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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.