Home / 2,085,807.60-3,128,711.40-823,471.20

Finding the Fourth Proportional to 2,085,807.60, 3,128,711.40 and 823,471.20

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Solution

The fourth proportional to 2,085,807.60, 3,128,711.40 and 823,471.20 is: 1,235,206.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,085,807.60 : 3,128,711.40 = 823,471.20 : x
  2. Step 2: Convert to fraction form
    2,085,807.60/3,128,711.40 = 823,471.20/x
  3. Step 3: Cross multiply
    2,085,807.60x = 3,128,711.40 × 823,471.20
  4. Step 4: Simplify right side
    2,085,807.60x = 2,576,403,731,011.68
  5. Step 5: Solve for x
    x = 2,576,403,731,011.68/2,085,807.60
  6. Step 6: Final answer
    x = 1,235,206.80

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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.