Home / 1,418,682.40-2,128,023.60-1,288,045.60

Finding the Fourth Proportional to 1,418,682.40, 2,128,023.60 and 1,288,045.60

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Solution

The fourth proportional to 1,418,682.40, 2,128,023.60 and 1,288,045.60 is: 1,932,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418,682.40 : 2,128,023.60 = 1,288,045.60 : x
  2. Step 2: Convert to fraction form
    1,418,682.40/2,128,023.60 = 1,288,045.60/x
  3. Step 3: Cross multiply
    1,418,682.40x = 2,128,023.60 × 1,288,045.60
  4. Step 4: Simplify right side
    1,418,682.40x = 2,740,991,434,676.16
  5. Step 5: Solve for x
    x = 2,740,991,434,676.16/1,418,682.40
  6. Step 6: Final answer
    x = 1,932,068.40

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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.