Home / 646,386.78-967,218.19-380,272.62

Finding the Fourth Proportional to 646,386.78, 967,218.19 and 380,272.62

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Solution

The fourth proportional to 646,386.78, 967,218.19 and 380,272.62 is: 569,019.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,386.78 : 967,218.19 = 380,272.62 : x
  2. Step 2: Convert to fraction form
    646,386.78/967,218.19 = 380,272.62/x
  3. Step 3: Cross multiply
    646,386.78x = 967,218.19 × 380,272.62
  4. Step 4: Simplify right side
    646,386.78x = 367,806,597,899.35
  5. Step 5: Solve for x
    x = 367,806,597,899.35/646,386.78
  6. Step 6: Final answer
    x = 569,019.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.