Home / 811,856.07-1,120,333.77-449,295.21

Finding the Fourth Proportional to 811,856.07, 1,120,333.77 and 449,295.21

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Solution

The fourth proportional to 811,856.07, 1,120,333.77 and 449,295.21 is: 620,012.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,856.07 : 1,120,333.77 = 449,295.21 : x
  2. Step 2: Convert to fraction form
    811,856.07/1,120,333.77 = 449,295.21/x
  3. Step 3: Cross multiply
    811,856.07x = 1,120,333.77 × 449,295.21
  4. Step 4: Simplify right side
    811,856.07x = 503,360,596,462.24
  5. Step 5: Solve for x
    x = 503,360,596,462.24/811,856.07
  6. Step 6: Final answer
    x = 620,012.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.