Home / 686,684.12-947,619.41-380,760.35

Finding the Fourth Proportional to 686,684.12, 947,619.41 and 380,760.35

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Solution

The fourth proportional to 686,684.12, 947,619.41 and 380,760.35 is: 525,446.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,684.12 : 947,619.41 = 380,760.35 : x
  2. Step 2: Convert to fraction form
    686,684.12/947,619.41 = 380,760.35/x
  3. Step 3: Cross multiply
    686,684.12x = 947,619.41 × 380,760.35
  4. Step 4: Simplify right side
    686,684.12x = 360,815,891,576.50
  5. Step 5: Solve for x
    x = 360,815,891,576.50/686,684.12
  6. Step 6: Final answer
    x = 525,446.68

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1.5x scale

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.