Home / 646,646.34-892,441.55-356,287.09

Finding the Fourth Proportional to 646,646.34, 892,441.55 and 356,287.09

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Solution

The fourth proportional to 646,646.34, 892,441.55 and 356,287.09 is: 491,714.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,646.34 : 892,441.55 = 356,287.09 : x
  2. Step 2: Convert to fraction form
    646,646.34/892,441.55 = 356,287.09/x
  3. Step 3: Cross multiply
    646,646.34x = 892,441.55 × 356,287.09
  4. Step 4: Simplify right side
    646,646.34x = 317,965,402,844.59
  5. Step 5: Solve for x
    x = 317,965,402,844.59/646,646.34
  6. Step 6: Final answer
    x = 491,714.53

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1.5x scale

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.