Home / 1,557,921.86-2,337,000.99-420,667.51

Finding the Fourth Proportional to 1,557,921.86, 2,337,000.99 and 420,667.51

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Solution

The fourth proportional to 1,557,921.86, 2,337,000.99 and 420,667.51 is: 631,033.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557,921.86 : 2,337,000.99 = 420,667.51 : x
  2. Step 2: Convert to fraction form
    1,557,921.86/2,337,000.99 = 420,667.51/x
  3. Step 3: Cross multiply
    1,557,921.86x = 2,337,000.99 × 420,667.51
  4. Step 4: Simplify right side
    1,557,921.86x = 983,100,375,645.83
  5. Step 5: Solve for x
    x = 983,100,375,645.83/1,557,921.86
  6. Step 6: Final answer
    x = 631,033.17

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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.