Home / 686,415.19-1,029,628.86-281,829.91

Finding the Fourth Proportional to 686,415.19, 1,029,628.86 and 281,829.91

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Solution

The fourth proportional to 686,415.19, 1,029,628.86 and 281,829.91 is: 422,747.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,415.19 : 1,029,628.86 = 281,829.91 : x
  2. Step 2: Convert to fraction form
    686,415.19/1,029,628.86 = 281,829.91/x
  3. Step 3: Cross multiply
    686,415.19x = 1,029,628.86 × 281,829.91
  4. Step 4: Simplify right side
    686,415.19x = 290,180,208,947.20
  5. Step 5: Solve for x
    x = 290,180,208,947.20/686,415.19
  6. Step 6: Final answer
    x = 422,747.36

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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.