Home / 686,670.27-947,517.86-376,491.23

Finding the Fourth Proportional to 686,670.27, 947,517.86 and 376,491.23

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Solution

The fourth proportional to 686,670.27, 947,517.86 and 376,491.23 is: 519,510.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,670.27 : 947,517.86 = 376,491.23 : x
  2. Step 2: Convert to fraction form
    686,670.27/947,517.86 = 376,491.23/x
  3. Step 3: Cross multiply
    686,670.27x = 947,517.86 × 376,491.23
  4. Step 4: Simplify right side
    686,670.27x = 356,732,165,921.21
  5. Step 5: Solve for x
    x = 356,732,165,921.21/686,670.27
  6. Step 6: Final answer
    x = 519,510.14

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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.