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Finding the Fourth Proportional to 646,239.69, 891,230.22 and 404,544.30

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Solution

The fourth proportional to 646,239.69, 891,230.22 and 404,544.30 is: 557,907.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,239.69 : 891,230.22 = 404,544.30 : x
  2. Step 2: Convert to fraction form
    646,239.69/891,230.22 = 404,544.30/x
  3. Step 3: Cross multiply
    646,239.69x = 891,230.22 × 404,544.30
  4. Step 4: Simplify right side
    646,239.69x = 360,542,105,488.75
  5. Step 5: Solve for x
    x = 360,542,105,488.75/646,239.69
  6. Step 6: Final answer
    x = 557,907.71

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1.5x scale

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.