Home / 865,193.40-1,297,271.70-445,289.40

Finding the Fourth Proportional to 865,193.40, 1,297,271.70 and 445,289.40

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Solution

The fourth proportional to 865,193.40, 1,297,271.70 and 445,289.40 is: 667,667.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,193.40 : 1,297,271.70 = 445,289.40 : x
  2. Step 2: Convert to fraction form
    865,193.40/1,297,271.70 = 445,289.40/x
  3. Step 3: Cross multiply
    865,193.40x = 1,297,271.70 × 445,289.40
  4. Step 4: Simplify right side
    865,193.40x = 577,661,336,929.98
  5. Step 5: Solve for x
    x = 577,661,336,929.98/865,193.40
  6. Step 6: Final answer
    x = 667,667.29

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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.