Home / 664,786.40-996,013.20-545,813.60

Finding the Fourth Proportional to 664,786.40, 996,013.20 and 545,813.60

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Solution

The fourth proportional to 664,786.40, 996,013.20 and 545,813.60 is: 817,762.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,786.40 : 996,013.20 = 545,813.60 : x
  2. Step 2: Convert to fraction form
    664,786.40/996,013.20 = 545,813.60/x
  3. Step 3: Cross multiply
    664,786.40x = 996,013.20 × 545,813.60
  4. Step 4: Simplify right side
    664,786.40x = 543,637,550,339.52
  5. Step 5: Solve for x
    x = 543,637,550,339.52/664,786.40
  6. Step 6: Final answer
    x = 817,762.74

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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.