Home / 816,890.40-1,225,336.32-255,968.64

Finding the Fourth Proportional to 816,890.40, 1,225,336.32 and 255,968.64

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Solution

The fourth proportional to 816,890.40, 1,225,336.32 and 255,968.64 is: 383,953.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,890.40 : 1,225,336.32 = 255,968.64 : x
  2. Step 2: Convert to fraction form
    816,890.40/1,225,336.32 = 255,968.64/x
  3. Step 3: Cross multiply
    816,890.40x = 1,225,336.32 × 255,968.64
  4. Step 4: Simplify right side
    816,890.40x = 313,647,671,373.01
  5. Step 5: Solve for x
    x = 313,647,671,373.01/816,890.40
  6. Step 6: Final answer
    x = 383,953.19

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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.