Home / 639,820.28-882,949.02-353,339.12

Finding the Fourth Proportional to 639,820.28, 882,949.02 and 353,339.12

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Solution

The fourth proportional to 639,820.28, 882,949.02 and 353,339.12 is: 487,606.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,820.28 : 882,949.02 = 353,339.12 : x
  2. Step 2: Convert to fraction form
    639,820.28/882,949.02 = 353,339.12/x
  3. Step 3: Cross multiply
    639,820.28x = 882,949.02 × 353,339.12
  4. Step 4: Simplify right side
    639,820.28x = 311,980,429,731.66
  5. Step 5: Solve for x
    x = 311,980,429,731.66/639,820.28
  6. Step 6: Final answer
    x = 487,606.35

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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.