Home / 685,225.40-1,027,886.70-211,948.88

Finding the Fourth Proportional to 685,225.40, 1,027,886.70 and 211,948.88

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Solution

The fourth proportional to 685,225.40, 1,027,886.70 and 211,948.88 is: 317,938.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,225.40 : 1,027,886.70 = 211,948.88 : x
  2. Step 2: Convert to fraction form
    685,225.40/1,027,886.70 = 211,948.88/x
  3. Step 3: Cross multiply
    685,225.40x = 1,027,886.70 × 211,948.88
  4. Step 4: Simplify right side
    685,225.40x = 217,859,434,831.90
  5. Step 5: Solve for x
    x = 217,859,434,831.90/685,225.40
  6. Step 6: Final answer
    x = 317,938.35

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1.5x scale

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.