Home / 2,139,457.52-3,209,161.62-520,235.48

Finding the Fourth Proportional to 2,139,457.52, 3,209,161.62 and 520,235.48

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Solution

The fourth proportional to 2,139,457.52, 3,209,161.62 and 520,235.48 is: 780,347.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139,457.52 : 3,209,161.62 = 520,235.48 : x
  2. Step 2: Convert to fraction form
    2,139,457.52/3,209,161.62 = 520,235.48/x
  3. Step 3: Cross multiply
    2,139,457.52x = 3,209,161.62 × 520,235.48
  4. Step 4: Simplify right side
    2,139,457.52x = 1,669,519,735,778.28
  5. Step 5: Solve for x
    x = 1,669,519,735,778.28/2,139,457.52
  6. Step 6: Final answer
    x = 780,347.22

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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.