Home / 639,485.74-882,496.44-352,999.66

Finding the Fourth Proportional to 639,485.74, 882,496.44 and 352,999.66

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Solution

The fourth proportional to 639,485.74, 882,496.44 and 352,999.66 is: 487,142.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,485.74 : 882,496.44 = 352,999.66 : x
  2. Step 2: Convert to fraction form
    639,485.74/882,496.44 = 352,999.66/x
  3. Step 3: Cross multiply
    639,485.74x = 882,496.44 × 352,999.66
  4. Step 4: Simplify right side
    639,485.74x = 311,520,943,271.21
  5. Step 5: Solve for x
    x = 311,520,943,271.21/639,485.74
  6. Step 6: Final answer
    x = 487,142.91

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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.