Home / 686,011.32-1,028,798.82-641,233.08

Finding the Fourth Proportional to 686,011.32, 1,028,798.82 and 641,233.08

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Solution

The fourth proportional to 686,011.32, 1,028,798.82 and 641,233.08 is: 961,645.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,011.32 : 1,028,798.82 = 641,233.08 : x
  2. Step 2: Convert to fraction form
    686,011.32/1,028,798.82 = 641,233.08/x
  3. Step 3: Cross multiply
    686,011.32x = 1,028,798.82 × 641,233.08
  4. Step 4: Simplify right side
    686,011.32x = 659,699,836,048.97
  5. Step 5: Solve for x
    x = 659,699,836,048.97/686,011.32
  6. Step 6: Final answer
    x = 961,645.70

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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.