Home / 639,410.65-882,386.76-352,930.81

Finding the Fourth Proportional to 639,410.65, 882,386.76 and 352,930.81

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Solution

The fourth proportional to 639,410.65, 882,386.76 and 352,930.81 is: 487,044.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,410.65 : 882,386.76 = 352,930.81 : x
  2. Step 2: Convert to fraction form
    639,410.65/882,386.76 = 352,930.81/x
  3. Step 3: Cross multiply
    639,410.65x = 882,386.76 × 352,930.81
  4. Step 4: Simplify right side
    639,410.65x = 311,421,473,940.08
  5. Step 5: Solve for x
    x = 311,421,473,940.08/639,410.65
  6. Step 6: Final answer
    x = 487,044.55

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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.