Home / 639,386.31-882,290.24-352,887.92

Finding the Fourth Proportional to 639,386.31, 882,290.24 and 352,887.92

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Solution

The fourth proportional to 639,386.31, 882,290.24 and 352,887.92 is: 486,950.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,386.31 : 882,290.24 = 352,887.92 : x
  2. Step 2: Convert to fraction form
    639,386.31/882,290.24 = 352,887.92/x
  3. Step 3: Cross multiply
    639,386.31x = 882,290.24 × 352,887.92
  4. Step 4: Simplify right side
    639,386.31x = 311,349,567,629.90
  5. Step 5: Solve for x
    x = 311,349,567,629.90/639,386.31
  6. Step 6: Final answer
    x = 486,950.63

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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.