Home / 811,856.22-1,120,379.87-525,874.08

Finding the Fourth Proportional to 811,856.22, 1,120,379.87 and 525,874.08

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Solution

The fourth proportional to 811,856.22, 1,120,379.87 and 525,874.08 is: 725,718.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,856.22 : 1,120,379.87 = 525,874.08 : x
  2. Step 2: Convert to fraction form
    811,856.22/1,120,379.87 = 525,874.08/x
  3. Step 3: Cross multiply
    811,856.22x = 1,120,379.87 × 525,874.08
  4. Step 4: Simplify right side
    811,856.22x = 589,178,730,757.40
  5. Step 5: Solve for x
    x = 589,178,730,757.40/811,856.22
  6. Step 6: Final answer
    x = 725,718.07

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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.