Home / 1,212,538.80-1,818,808.20-811,005.60

Finding the Fourth Proportional to 1,212,538.80, 1,818,808.20 and 811,005.60

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Solution

The fourth proportional to 1,212,538.80, 1,818,808.20 and 811,005.60 is: 1,216,508.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,538.80 : 1,818,808.20 = 811,005.60 : x
  2. Step 2: Convert to fraction form
    1,212,538.80/1,818,808.20 = 811,005.60/x
  3. Step 3: Cross multiply
    1,212,538.80x = 1,818,808.20 × 811,005.60
  4. Step 4: Simplify right side
    1,212,538.80x = 1,475,063,635,525.92
  5. Step 5: Solve for x
    x = 1,475,063,635,525.92/1,212,538.80
  6. Step 6: Final answer
    x = 1,216,508.40

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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.