Home / 686,167.30-1,029,253.43-485,881.86

Finding the Fourth Proportional to 686,167.30, 1,029,253.43 and 485,881.86

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Solution

The fourth proportional to 686,167.30, 1,029,253.43 and 485,881.86 is: 728,824.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,167.30 : 1,029,253.43 = 485,881.86 : x
  2. Step 2: Convert to fraction form
    686,167.30/1,029,253.43 = 485,881.86/x
  3. Step 3: Cross multiply
    686,167.30x = 1,029,253.43 × 485,881.86
  4. Step 4: Simplify right side
    686,167.30x = 500,095,570,979.78
  5. Step 5: Solve for x
    x = 500,095,570,979.78/686,167.30
  6. Step 6: Final answer
    x = 728,824.55

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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.