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Finding the Fourth Proportional to 646,253.98, 891,249.89 and 404,558.55

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Solution

The fourth proportional to 646,253.98, 891,249.89 and 404,558.55 is: 557,927.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,253.98 : 891,249.89 = 404,558.55 : x
  2. Step 2: Convert to fraction form
    646,253.98/891,249.89 = 404,558.55/x
  3. Step 3: Cross multiply
    646,253.98x = 891,249.89 × 404,558.55
  4. Step 4: Simplify right side
    646,253.98x = 360,562,761,163.27
  5. Step 5: Solve for x
    x = 360,562,761,163.27/646,253.98
  6. Step 6: Final answer
    x = 557,927.34

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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.