Home / 639,391.55-882,356.09-352,911.63

Finding the Fourth Proportional to 639,391.55, 882,356.09 and 352,911.63

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Solution

The fourth proportional to 639,391.55, 882,356.09 and 352,911.63 is: 487,015.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,391.55 : 882,356.09 = 352,911.63 : x
  2. Step 2: Convert to fraction form
    639,391.55/882,356.09 = 352,911.63/x
  3. Step 3: Cross multiply
    639,391.55x = 882,356.09 × 352,911.63
  4. Step 4: Simplify right side
    639,391.55x = 311,393,727,506.60
  5. Step 5: Solve for x
    x = 311,393,727,506.60/639,391.55
  6. Step 6: Final answer
    x = 487,015.71

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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.