Home / 545,263.20-816,145.20-426,290.40

Finding the Fourth Proportional to 545,263.20, 816,145.20 and 426,290.40

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Solution

The fourth proportional to 545,263.20, 816,145.20 and 426,290.40 is: 638,067.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,263.20 : 816,145.20 = 426,290.40 : x
  2. Step 2: Convert to fraction form
    545,263.20/816,145.20 = 426,290.40/x
  3. Step 3: Cross multiply
    545,263.20x = 816,145.20 × 426,290.40
  4. Step 4: Simplify right side
    545,263.20x = 347,914,863,766.08
  5. Step 5: Solve for x
    x = 347,914,863,766.08/545,263.20
  6. Step 6: Final answer
    x = 638,067.75

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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.