Home / 639,384.80-882,288.17-352,886.42

Finding the Fourth Proportional to 639,384.80, 882,288.17 and 352,886.42

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Solution

The fourth proportional to 639,384.80, 882,288.17 and 352,886.42 is: 486,948.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,384.80 : 882,288.17 = 352,886.42 : x
  2. Step 2: Convert to fraction form
    639,384.80/882,288.17 = 352,886.42/x
  3. Step 3: Cross multiply
    639,384.80x = 882,288.17 × 352,886.42
  4. Step 4: Simplify right side
    639,384.80x = 311,347,513,719.65
  5. Step 5: Solve for x
    x = 311,347,513,719.65/639,384.80
  6. Step 6: Final answer
    x = 486,948.57

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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.