Home / 831,913.21-1,247,869.86-270,947.71

Finding the Fourth Proportional to 831,913.21, 1,247,869.86 and 270,947.71

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Solution

The fourth proportional to 831,913.21, 1,247,869.86 and 270,947.71 is: 406,421.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,913.21 : 1,247,869.86 = 270,947.71 : x
  2. Step 2: Convert to fraction form
    831,913.21/1,247,869.86 = 270,947.71/x
  3. Step 3: Cross multiply
    831,913.21x = 1,247,869.86 × 270,947.71
  4. Step 4: Simplify right side
    831,913.21x = 338,107,480,945.02
  5. Step 5: Solve for x
    x = 338,107,480,945.02/831,913.21
  6. Step 6: Final answer
    x = 406,421.58

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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.