Home / 686,045.52-1,029,177.36-212,632.92

Finding the Fourth Proportional to 686,045.52, 1,029,177.36 and 212,632.92

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Solution

The fourth proportional to 686,045.52, 1,029,177.36 and 212,632.92 is: 318,983.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,045.52 : 1,029,177.36 = 212,632.92 : x
  2. Step 2: Convert to fraction form
    686,045.52/1,029,177.36 = 212,632.92/x
  3. Step 3: Cross multiply
    686,045.52x = 1,029,177.36 × 212,632.92
  4. Step 4: Simplify right side
    686,045.52x = 218,836,987,254.69
  5. Step 5: Solve for x
    x = 218,836,987,254.69/686,045.52
  6. Step 6: Final answer
    x = 318,983.19

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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.