Home / 2,138,307.59-3,208,004.80-621,990.53

Finding the Fourth Proportional to 2,138,307.59, 3,208,004.80 and 621,990.53

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Solution

The fourth proportional to 2,138,307.59, 3,208,004.80 and 621,990.53 is: 933,143.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,307.59 : 3,208,004.80 = 621,990.53 : x
  2. Step 2: Convert to fraction form
    2,138,307.59/3,208,004.80 = 621,990.53/x
  3. Step 3: Cross multiply
    2,138,307.59x = 3,208,004.80 × 621,990.53
  4. Step 4: Simplify right side
    2,138,307.59x = 1,995,348,600,229.56
  5. Step 5: Solve for x
    x = 1,995,348,600,229.56/2,138,307.59
  6. Step 6: Final answer
    x = 933,143.86

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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.