Home / 644,811.80-967,217.70-445,746.20

Finding the Fourth Proportional to 644,811.80, 967,217.70 and 445,746.20

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Solution

The fourth proportional to 644,811.80, 967,217.70 and 445,746.20 is: 668,619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,811.80 : 967,217.70 = 445,746.20 : x
  2. Step 2: Convert to fraction form
    644,811.80/967,217.70 = 445,746.20/x
  3. Step 3: Cross multiply
    644,811.80x = 967,217.70 × 445,746.20
  4. Step 4: Simplify right side
    644,811.80x = 431,133,614,347.74
  5. Step 5: Solve for x
    x = 431,133,614,347.74/644,811.80
  6. Step 6: Final answer
    x = 668,619.30

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Double scale
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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.