Home / 1,211,712.30-1,817,568.45-412,922.70

Finding the Fourth Proportional to 1,211,712.30, 1,817,568.45 and 412,922.70

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Solution

The fourth proportional to 1,211,712.30, 1,817,568.45 and 412,922.70 is: 619,384.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,712.30 : 1,817,568.45 = 412,922.70 : x
  2. Step 2: Convert to fraction form
    1,211,712.30/1,817,568.45 = 412,922.70/x
  3. Step 3: Cross multiply
    1,211,712.30x = 1,817,568.45 × 412,922.70
  4. Step 4: Simplify right side
    1,211,712.30x = 750,515,271,808.82
  5. Step 5: Solve for x
    x = 750,515,271,808.82/1,211,712.30
  6. Step 6: Final answer
    x = 619,384.05

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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.