Home / 1,678,142.13-2,316,713.78-1,309,829.46

Finding the Fourth Proportional to 1,678,142.13, 2,316,713.78 and 1,309,829.46

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Solution

The fourth proportional to 1,678,142.13, 2,316,713.78 and 1,309,829.46 is: 1,808,249.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678,142.13 : 2,316,713.78 = 1,309,829.46 : x
  2. Step 2: Convert to fraction form
    1,678,142.13/2,316,713.78 = 1,309,829.46/x
  3. Step 3: Cross multiply
    1,678,142.13x = 2,316,713.78 × 1,309,829.46
  4. Step 4: Simplify right side
    1,678,142.13x = 3,034,499,959,431.96
  5. Step 5: Solve for x
    x = 3,034,499,959,431.96/1,678,142.13
  6. Step 6: Final answer
    x = 1,808,249.67

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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.