Home / 816,416.20-1,224,818.70-342,857.80

Finding the Fourth Proportional to 816,416.20, 1,224,818.70 and 342,857.80

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Solution

The fourth proportional to 816,416.20, 1,224,818.70 and 342,857.80 is: 514,368.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,416.20 : 1,224,818.70 = 342,857.80 : x
  2. Step 2: Convert to fraction form
    816,416.20/1,224,818.70 = 342,857.80/x
  3. Step 3: Cross multiply
    816,416.20x = 1,224,818.70 × 342,857.80
  4. Step 4: Simplify right side
    816,416.20x = 419,938,644,880.86
  5. Step 5: Solve for x
    x = 419,938,644,880.86/816,416.20
  6. Step 6: Final answer
    x = 514,368.34

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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.