Home / 1,212,152.80-1,818,229.20-538,232.80

Finding the Fourth Proportional to 1,212,152.80, 1,818,229.20 and 538,232.80

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Solution

The fourth proportional to 1,212,152.80, 1,818,229.20 and 538,232.80 is: 807,349.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,152.80 : 1,818,229.20 = 538,232.80 : x
  2. Step 2: Convert to fraction form
    1,212,152.80/1,818,229.20 = 538,232.80/x
  3. Step 3: Cross multiply
    1,212,152.80x = 1,818,229.20 × 538,232.80
  4. Step 4: Simplify right side
    1,212,152.80x = 978,630,593,357.76
  5. Step 5: Solve for x
    x = 978,630,593,357.76/1,212,152.80
  6. Step 6: Final answer
    x = 807,349.20

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Half scale
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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.