Home / 1,485,657.72-2,228,581.62-420,784.20

Finding the Fourth Proportional to 1,485,657.72, 2,228,581.62 and 420,784.20

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Solution

The fourth proportional to 1,485,657.72, 2,228,581.62 and 420,784.20 is: 631,203.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485,657.72 : 2,228,581.62 = 420,784.20 : x
  2. Step 2: Convert to fraction form
    1,485,657.72/2,228,581.62 = 420,784.20/x
  3. Step 3: Cross multiply
    1,485,657.72x = 2,228,581.62 × 420,784.20
  4. Step 4: Simplify right side
    1,485,657.72x = 937,751,934,106.40
  5. Step 5: Solve for x
    x = 937,751,934,106.40/1,485,657.72
  6. Step 6: Final answer
    x = 631,203.22

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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.