Home / 785,479.48-1,178,311.49-280,112.31

Finding the Fourth Proportional to 785,479.48, 1,178,311.49 and 280,112.31

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Solution

The fourth proportional to 785,479.48, 1,178,311.49 and 280,112.31 is: 420,201.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,479.48 : 1,178,311.49 = 280,112.31 : x
  2. Step 2: Convert to fraction form
    785,479.48/1,178,311.49 = 280,112.31/x
  3. Step 3: Cross multiply
    785,479.48x = 1,178,311.49 × 280,112.31
  4. Step 4: Simplify right side
    785,479.48x = 330,059,553,013.30
  5. Step 5: Solve for x
    x = 330,059,553,013.30/785,479.48
  6. Step 6: Final answer
    x = 420,201.37

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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.