Home / 1,719,427.20-2,579,140.80-869,121.60

Finding the Fourth Proportional to 1,719,427.20, 2,579,140.80 and 869,121.60

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Solution

The fourth proportional to 1,719,427.20, 2,579,140.80 and 869,121.60 is: 1,303,682.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719,427.20 : 2,579,140.80 = 869,121.60 : x
  2. Step 2: Convert to fraction form
    1,719,427.20/2,579,140.80 = 869,121.60/x
  3. Step 3: Cross multiply
    1,719,427.20x = 2,579,140.80 × 869,121.60
  4. Step 4: Simplify right side
    1,719,427.20x = 2,241,586,978,721.28
  5. Step 5: Solve for x
    x = 2,241,586,978,721.28/1,719,427.20
  6. Step 6: Final answer
    x = 1,303,682.40

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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.