Home / 2,140,934.51-3,211,401.77-720,871.67

Finding the Fourth Proportional to 2,140,934.51, 3,211,401.77 and 720,871.67

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Solution

The fourth proportional to 2,140,934.51, 3,211,401.77 and 720,871.67 is: 1,081,307.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140,934.51 : 3,211,401.77 = 720,871.67 : x
  2. Step 2: Convert to fraction form
    2,140,934.51/3,211,401.77 = 720,871.67/x
  3. Step 3: Cross multiply
    2,140,934.51x = 3,211,401.77 × 720,871.67
  4. Step 4: Simplify right side
    2,140,934.51x = 2,315,008,556,980.86
  5. Step 5: Solve for x
    x = 2,315,008,556,980.86/2,140,934.51
  6. Step 6: Final answer
    x = 1,081,307.51

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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.