Home / 639,486.21-882,497.13-353,000.16

Finding the Fourth Proportional to 639,486.21, 882,497.13 and 353,000.16

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Solution

The fourth proportional to 639,486.21, 882,497.13 and 353,000.16 is: 487,143.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,486.21 : 882,497.13 = 353,000.16 : x
  2. Step 2: Convert to fraction form
    639,486.21/882,497.13 = 353,000.16/x
  3. Step 3: Cross multiply
    639,486.21x = 882,497.13 × 353,000.16
  4. Step 4: Simplify right side
    639,486.21x = 311,521,628,089.54
  5. Step 5: Solve for x
    x = 311,521,628,089.54/639,486.21
  6. Step 6: Final answer
    x = 487,143.62

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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.