Home / 1,112,319.89-1,668,976.09-512,959.31

Finding the Fourth Proportional to 1,112,319.89, 1,668,976.09 and 512,959.31

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Solution

The fourth proportional to 1,112,319.89, 1,668,976.09 and 512,959.31 is: 769,667.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,319.89 : 1,668,976.09 = 512,959.31 : x
  2. Step 2: Convert to fraction form
    1,112,319.89/1,668,976.09 = 512,959.31/x
  3. Step 3: Cross multiply
    1,112,319.89x = 1,668,976.09 × 512,959.31
  4. Step 4: Simplify right side
    1,112,319.89x = 856,116,823,532.90
  5. Step 5: Solve for x
    x = 856,116,823,532.90/1,112,319.89
  6. Step 6: Final answer
    x = 769,667.82

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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.