Home / 1,298,411.21-1,947,558.38-872,126.64

Finding the Fourth Proportional to 1,298,411.21, 1,947,558.38 and 872,126.64

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Solution

The fourth proportional to 1,298,411.21, 1,947,558.38 and 872,126.64 is: 1,308,150.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,411.21 : 1,947,558.38 = 872,126.64 : x
  2. Step 2: Convert to fraction form
    1,298,411.21/1,947,558.38 = 872,126.64/x
  3. Step 3: Cross multiply
    1,298,411.21x = 1,947,558.38 × 872,126.64
  4. Step 4: Simplify right side
    1,298,411.21x = 1,698,517,546,153.24
  5. Step 5: Solve for x
    x = 1,698,517,546,153.24/1,298,411.21
  6. Step 6: Final answer
    x = 1,308,150.71

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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.