Home / 679,974.80-1,019,962.20-612,323.60

Finding the Fourth Proportional to 679,974.80, 1,019,962.20 and 612,323.60

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Solution

The fourth proportional to 679,974.80, 1,019,962.20 and 612,323.60 is: 918,485.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,974.80 : 1,019,962.20 = 612,323.60 : x
  2. Step 2: Convert to fraction form
    679,974.80/1,019,962.20 = 612,323.60/x
  3. Step 3: Cross multiply
    679,974.80x = 1,019,962.20 × 612,323.60
  4. Step 4: Simplify right side
    679,974.80x = 624,546,926,167.92
  5. Step 5: Solve for x
    x = 624,546,926,167.92/679,974.80
  6. Step 6: Final answer
    x = 918,485.40

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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.