Home / 1,485,810.40-2,228,715.60-420,838.60

Finding the Fourth Proportional to 1,485,810.40, 2,228,715.60 and 420,838.60

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Solution

The fourth proportional to 1,485,810.40, 2,228,715.60 and 420,838.60 is: 631,257.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485,810.40 : 2,228,715.60 = 420,838.60 : x
  2. Step 2: Convert to fraction form
    1,485,810.40/2,228,715.60 = 420,838.60/x
  3. Step 3: Cross multiply
    1,485,810.40x = 2,228,715.60 × 420,838.60
  4. Step 4: Simplify right side
    1,485,810.40x = 937,929,552,902.16
  5. Step 5: Solve for x
    x = 937,929,552,902.16/1,485,810.40
  6. Step 6: Final answer
    x = 631,257.90

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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.