Home / 816,308.40-1,224,142.20-310,600.80

Finding the Fourth Proportional to 816,308.40, 1,224,142.20 and 310,600.80

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Solution

The fourth proportional to 816,308.40, 1,224,142.20 and 310,600.80 is: 465,779.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,308.40 : 1,224,142.20 = 310,600.80 : x
  2. Step 2: Convert to fraction form
    816,308.40/1,224,142.20 = 310,600.80/x
  3. Step 3: Cross multiply
    816,308.40x = 1,224,142.20 × 310,600.80
  4. Step 4: Simplify right side
    816,308.40x = 380,219,546,633.76
  5. Step 5: Solve for x
    x = 380,219,546,633.76/816,308.40
  6. Step 6: Final answer
    x = 465,779.29

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1.5x scale

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.