Home / 1,231,615.80-1,847,423.70-811,135.80

Finding the Fourth Proportional to 1,231,615.80, 1,847,423.70 and 811,135.80

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Solution

The fourth proportional to 1,231,615.80, 1,847,423.70 and 811,135.80 is: 1,216,703.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,615.80 : 1,847,423.70 = 811,135.80 : x
  2. Step 2: Convert to fraction form
    1,231,615.80/1,847,423.70 = 811,135.80/x
  3. Step 3: Cross multiply
    1,231,615.80x = 1,847,423.70 × 811,135.80
  4. Step 4: Simplify right side
    1,231,615.80x = 1,498,511,500,838.46
  5. Step 5: Solve for x
    x = 1,498,511,500,838.46/1,231,615.80
  6. Step 6: Final answer
    x = 1,216,703.70

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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.