Home / 2,617,646.56-3,926,355.60-820,489

Finding the Fourth Proportional to 2,617,646.56, 3,926,355.60 and 820,489

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Solution

The fourth proportional to 2,617,646.56, 3,926,355.60 and 820,489 is: 1,230,697.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617,646.56 : 3,926,355.60 = 820,489 : x
  2. Step 2: Convert to fraction form
    2,617,646.56/3,926,355.60 = 820,489/x
  3. Step 3: Cross multiply
    2,617,646.56x = 3,926,355.60 × 820,489
  4. Step 4: Simplify right side
    2,617,646.56x = 3,221,531,579,888.40
  5. Step 5: Solve for x
    x = 3,221,531,579,888.40/2,617,646.56
  6. Step 6: Final answer
    x = 1,230,697.69

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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.