Home / 646,444.40-892,217.88-391,934.96

Finding the Fourth Proportional to 646,444.40, 892,217.88 and 391,934.96

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Solution

The fourth proportional to 646,444.40, 892,217.88 and 391,934.96 is: 540,945.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,444.40 : 892,217.88 = 391,934.96 : x
  2. Step 2: Convert to fraction form
    646,444.40/892,217.88 = 391,934.96/x
  3. Step 3: Cross multiply
    646,444.40x = 892,217.88 × 391,934.96
  4. Step 4: Simplify right side
    646,444.40x = 349,691,379,109.09
  5. Step 5: Solve for x
    x = 349,691,379,109.09/646,444.40
  6. Step 6: Final answer
    x = 540,945.79

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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.