Home / 1,209,719.55-1,669,399.83-665,843.70

Finding the Fourth Proportional to 1,209,719.55, 1,669,399.83 and 665,843.70

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Solution

The fourth proportional to 1,209,719.55, 1,669,399.83 and 665,843.70 is: 918,857.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,719.55 : 1,669,399.83 = 665,843.70 : x
  2. Step 2: Convert to fraction form
    1,209,719.55/1,669,399.83 = 665,843.70/x
  3. Step 3: Cross multiply
    1,209,719.55x = 1,669,399.83 × 665,843.70
  4. Step 4: Simplify right side
    1,209,719.55x = 1,111,559,359,586.57
  5. Step 5: Solve for x
    x = 1,111,559,359,586.57/1,209,719.55
  6. Step 6: Final answer
    x = 918,857.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.