Home / 639,807.12-882,926.73-353,321.46

Finding the Fourth Proportional to 639,807.12, 882,926.73 and 353,321.46

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Solution

The fourth proportional to 639,807.12, 882,926.73 and 353,321.46 is: 487,579.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,807.12 : 882,926.73 = 353,321.46 : x
  2. Step 2: Convert to fraction form
    639,807.12/882,926.73 = 353,321.46/x
  3. Step 3: Cross multiply
    639,807.12x = 882,926.73 × 353,321.46
  4. Step 4: Simplify right side
    639,807.12x = 311,956,961,316.63
  5. Step 5: Solve for x
    x = 311,956,961,316.63/639,807.12
  6. Step 6: Final answer
    x = 487,579.70

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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.