Home / 479,564.20-661,392.30-288,541.90

Finding the Fourth Proportional to 479,564.20, 661,392.30 and 288,541.90

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Solution

The fourth proportional to 479,564.20, 661,392.30 and 288,541.90 is: 397,943.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,564.20 : 661,392.30 = 288,541.90 : x
  2. Step 2: Convert to fraction form
    479,564.20/661,392.30 = 288,541.90/x
  3. Step 3: Cross multiply
    479,564.20x = 661,392.30 × 288,541.90
  4. Step 4: Simplify right side
    479,564.20x = 190,839,390,887.37
  5. Step 5: Solve for x
    x = 190,839,390,887.37/479,564.20
  6. Step 6: Final answer
    x = 397,943.36

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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.