Home / 1,320,596.20-1,980,311.10-521,612.20

Finding the Fourth Proportional to 1,320,596.20, 1,980,311.10 and 521,612.20

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Solution

The fourth proportional to 1,320,596.20, 1,980,311.10 and 521,612.20 is: 782,187.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,596.20 : 1,980,311.10 = 521,612.20 : x
  2. Step 2: Convert to fraction form
    1,320,596.20/1,980,311.10 = 521,612.20/x
  3. Step 3: Cross multiply
    1,320,596.20x = 1,980,311.10 × 521,612.20
  4. Step 4: Simplify right side
    1,320,596.20x = 1,032,954,429,555.42
  5. Step 5: Solve for x
    x = 1,032,954,429,555.42/1,320,596.20
  6. Step 6: Final answer
    x = 782,187.95

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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.