Home / 1,425,397.72-2,138,078.73-345,919.21

Finding the Fourth Proportional to 1,425,397.72, 2,138,078.73 and 345,919.21

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Solution

The fourth proportional to 1,425,397.72, 2,138,078.73 and 345,919.21 is: 518,874.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,397.72 : 2,138,078.73 = 345,919.21 : x
  2. Step 2: Convert to fraction form
    1,425,397.72/2,138,078.73 = 345,919.21/x
  3. Step 3: Cross multiply
    1,425,397.72x = 2,138,078.73 × 345,919.21
  4. Step 4: Simplify right side
    1,425,397.72x = 739,602,505,199.40
  5. Step 5: Solve for x
    x = 739,602,505,199.40/1,425,397.72
  6. Step 6: Final answer
    x = 518,874.48

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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.