Home / 816,421.20-1,224,826.20-342,862.80

Finding the Fourth Proportional to 816,421.20, 1,224,826.20 and 342,862.80

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Solution

The fourth proportional to 816,421.20, 1,224,826.20 and 342,862.80 is: 514,375.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,421.20 : 1,224,826.20 = 342,862.80 : x
  2. Step 2: Convert to fraction form
    816,421.20/1,224,826.20 = 342,862.80/x
  3. Step 3: Cross multiply
    816,421.20x = 1,224,826.20 × 342,862.80
  4. Step 4: Simplify right side
    816,421.20x = 419,947,340,445.36
  5. Step 5: Solve for x
    x = 419,947,340,445.36/816,421.20
  6. Step 6: Final answer
    x = 514,375.84

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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.