Home / 693,628.80-1,040,443.20-640,484.70

Finding the Fourth Proportional to 693,628.80, 1,040,443.20 and 640,484.70

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Solution

The fourth proportional to 693,628.80, 1,040,443.20 and 640,484.70 is: 960,727.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,628.80 : 1,040,443.20 = 640,484.70 : x
  2. Step 2: Convert to fraction form
    693,628.80/1,040,443.20 = 640,484.70/x
  3. Step 3: Cross multiply
    693,628.80x = 1,040,443.20 × 640,484.70
  4. Step 4: Simplify right side
    693,628.80x = 666,387,950,819.04
  5. Step 5: Solve for x
    x = 666,387,950,819.04/693,628.80
  6. Step 6: Final answer
    x = 960,727.05

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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.