Home / 816,323.40-1,224,164.70-310,615.80

Finding the Fourth Proportional to 816,323.40, 1,224,164.70 and 310,615.80

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Solution

The fourth proportional to 816,323.40, 1,224,164.70 and 310,615.80 is: 465,801.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,323.40 : 1,224,164.70 = 310,615.80 : x
  2. Step 2: Convert to fraction form
    816,323.40/1,224,164.70 = 310,615.80/x
  3. Step 3: Cross multiply
    816,323.40x = 1,224,164.70 × 310,615.80
  4. Step 4: Simplify right side
    816,323.40x = 380,244,897,622.26
  5. Step 5: Solve for x
    x = 380,244,897,622.26/816,323.40
  6. Step 6: Final answer
    x = 465,801.79

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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.