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Finding the Fourth Proportional to 686,262.55, 947,042.41 and 380,358.68

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Solution

The fourth proportional to 686,262.55, 947,042.41 and 380,358.68 is: 524,895.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,262.55 : 947,042.41 = 380,358.68 : x
  2. Step 2: Convert to fraction form
    686,262.55/947,042.41 = 380,358.68/x
  3. Step 3: Cross multiply
    686,262.55x = 947,042.41 × 380,358.68
  4. Step 4: Simplify right side
    686,262.55x = 360,215,802,388.33
  5. Step 5: Solve for x
    x = 360,215,802,388.33/686,262.55
  6. Step 6: Final answer
    x = 524,895.03

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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.