Home / 810,456.26-1,216,506.98-405,938.31

Finding the Fourth Proportional to 810,456.26, 1,216,506.98 and 405,938.31

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Solution

The fourth proportional to 810,456.26, 1,216,506.98 and 405,938.31 is: 609,319.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,456.26 : 1,216,506.98 = 405,938.31 : x
  2. Step 2: Convert to fraction form
    810,456.26/1,216,506.98 = 405,938.31/x
  3. Step 3: Cross multiply
    810,456.26x = 1,216,506.98 × 405,938.31
  4. Step 4: Simplify right side
    810,456.26x = 493,826,787,564.40
  5. Step 5: Solve for x
    x = 493,826,787,564.40/810,456.26
  6. Step 6: Final answer
    x = 609,319.48

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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.