Home / 1,889,816.76-2,609,008.38-1,309,882.68

Finding the Fourth Proportional to 1,889,816.76, 2,609,008.38 and 1,309,882.68

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Solution

The fourth proportional to 1,889,816.76, 2,609,008.38 and 1,309,882.68 is: 1,808,373.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889,816.76 : 2,609,008.38 = 1,309,882.68 : x
  2. Step 2: Convert to fraction form
    1,889,816.76/2,609,008.38 = 1,309,882.68/x
  3. Step 3: Cross multiply
    1,889,816.76x = 2,609,008.38 × 1,309,882.68
  4. Step 4: Simplify right side
    1,889,816.76x = 3,417,494,888,936.86
  5. Step 5: Solve for x
    x = 3,417,494,888,936.86/1,889,816.76
  6. Step 6: Final answer
    x = 1,808,373.68

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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.