Home / 685,141-1,027,809.51-211,862.86

Finding the Fourth Proportional to 685,141, 1,027,809.51 and 211,862.86

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Solution

The fourth proportional to 685,141, 1,027,809.51 and 211,862.86 is: 317,824.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,141 : 1,027,809.51 = 211,862.86 : x
  2. Step 2: Convert to fraction form
    685,141/1,027,809.51 = 211,862.86/x
  3. Step 3: Cross multiply
    685,141x = 1,027,809.51 × 211,862.86
  4. Step 4: Simplify right side
    685,141x = 217,754,662,323.80
  5. Step 5: Solve for x
    x = 217,754,662,323.80/685,141
  6. Step 6: Final answer
    x = 317,824.60

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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.