Home / 686,160.81-1,029,243.69-485,875.35

Finding the Fourth Proportional to 686,160.81, 1,029,243.69 and 485,875.35

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Solution

The fourth proportional to 686,160.81, 1,029,243.69 and 485,875.35 is: 728,814.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,160.81 : 1,029,243.69 = 485,875.35 : x
  2. Step 2: Convert to fraction form
    686,160.81/1,029,243.69 = 485,875.35/x
  3. Step 3: Cross multiply
    686,160.81x = 1,029,243.69 × 485,875.35
  4. Step 4: Simplify right side
    686,160.81x = 500,084,138,114.04
  5. Step 5: Solve for x
    x = 500,084,138,114.04/686,160.81
  6. Step 6: Final answer
    x = 728,814.78

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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.