Home / 2,688,538.40-4,037,473.20-1,428,826.40

Finding the Fourth Proportional to 2,688,538.40, 4,037,473.20 and 1,428,826.40

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Solution

The fourth proportional to 2,688,538.40, 4,037,473.20 and 1,428,826.40 is: 2,145,719.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688,538.40 : 4,037,473.20 = 1,428,826.40 : x
  2. Step 2: Convert to fraction form
    2,688,538.40/4,037,473.20 = 1,428,826.40/x
  3. Step 3: Cross multiply
    2,688,538.40x = 4,037,473.20 × 1,428,826.40
  4. Step 4: Simplify right side
    2,688,538.40x = 5,768,848,297,452.48
  5. Step 5: Solve for x
    x = 5,768,848,297,452.48/2,688,538.40
  6. Step 6: Final answer
    x = 2,145,719.14

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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.