Home / 1,211,403.40-1,817,105.10-579,992.20

Finding the Fourth Proportional to 1,211,403.40, 1,817,105.10 and 579,992.20

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Solution

The fourth proportional to 1,211,403.40, 1,817,105.10 and 579,992.20 is: 869,988.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,403.40 : 1,817,105.10 = 579,992.20 : x
  2. Step 2: Convert to fraction form
    1,211,403.40/1,817,105.10 = 579,992.20/x
  3. Step 3: Cross multiply
    1,211,403.40x = 1,817,105.10 × 579,992.20
  4. Step 4: Simplify right side
    1,211,403.40x = 1,053,906,784,580.22
  5. Step 5: Solve for x
    x = 1,053,906,784,580.22/1,211,403.40
  6. Step 6: Final answer
    x = 869,988.30

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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.