Home / 645,109.20-967,663.80-530,947.80

Finding the Fourth Proportional to 645,109.20, 967,663.80 and 530,947.80

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Solution

The fourth proportional to 645,109.20, 967,663.80 and 530,947.80 is: 796,421.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,109.20 : 967,663.80 = 530,947.80 : x
  2. Step 2: Convert to fraction form
    645,109.20/967,663.80 = 530,947.80/x
  3. Step 3: Cross multiply
    645,109.20x = 967,663.80 × 530,947.80
  4. Step 4: Simplify right side
    645,109.20x = 513,778,965,749.64
  5. Step 5: Solve for x
    x = 513,778,965,749.64/645,109.20
  6. Step 6: Final answer
    x = 796,421.70

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Double scale
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Similar ratio
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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.