Home / 1,106,709.80-1,661,619.90-686,805.80

Finding the Fourth Proportional to 1,106,709.80, 1,661,619.90 and 686,805.80

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Solution

The fourth proportional to 1,106,709.80, 1,661,619.90 and 686,805.80 is: 1,031,173.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,106,709.80 : 1,661,619.90 = 686,805.80 : x
  2. Step 2: Convert to fraction form
    1,106,709.80/1,661,619.90 = 686,805.80/x
  3. Step 3: Cross multiply
    1,106,709.80x = 1,661,619.90 × 686,805.80
  4. Step 4: Simplify right side
    1,106,709.80x = 1,141,210,184,715.42
  5. Step 5: Solve for x
    x = 1,141,210,184,715.42/1,106,709.80
  6. Step 6: Final answer
    x = 1,031,173.83

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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.