Home / 1,209,695.80-1,811,919.30-999,743.80

Finding the Fourth Proportional to 1,209,695.80, 1,811,919.30 and 999,743.80

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Solution

The fourth proportional to 1,209,695.80, 1,811,919.30 and 999,743.80 is: 1,497,446.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,695.80 : 1,811,919.30 = 999,743.80 : x
  2. Step 2: Convert to fraction form
    1,209,695.80/1,811,919.30 = 999,743.80/x
  3. Step 3: Cross multiply
    1,209,695.80x = 1,811,919.30 × 999,743.80
  4. Step 4: Simplify right side
    1,209,695.80x = 1,811,455,086,275.34
  5. Step 5: Solve for x
    x = 1,811,455,086,275.34/1,209,695.80
  6. Step 6: Final answer
    x = 1,497,446.78

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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.