Home / 646,642.83-892,436.71-356,283.58

Finding the Fourth Proportional to 646,642.83, 892,436.71 and 356,283.58

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Solution

The fourth proportional to 646,642.83, 892,436.71 and 356,283.58 is: 491,709.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,642.83 : 892,436.71 = 356,283.58 : x
  2. Step 2: Convert to fraction form
    646,642.83/892,436.71 = 356,283.58/x
  3. Step 3: Cross multiply
    646,642.83x = 892,436.71 × 356,283.58
  4. Step 4: Simplify right side
    646,642.83x = 317,960,544,180.80
  5. Step 5: Solve for x
    x = 317,960,544,180.80/646,642.83
  6. Step 6: Final answer
    x = 491,709.69

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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.