Home / 639,436.72-882,422.76-352,956.86

Finding the Fourth Proportional to 639,436.72, 882,422.76 and 352,956.86

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Solution

The fourth proportional to 639,436.72, 882,422.76 and 352,956.86 is: 487,080.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,436.72 : 882,422.76 = 352,956.86 : x
  2. Step 2: Convert to fraction form
    639,436.72/882,422.76 = 352,956.86/x
  3. Step 3: Cross multiply
    639,436.72x = 882,422.76 × 352,956.86
  4. Step 4: Simplify right side
    639,436.72x = 311,457,166,562.13
  5. Step 5: Solve for x
    x = 311,457,166,562.13/639,436.72
  6. Step 6: Final answer
    x = 487,080.51

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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.