Home / 791,985.40-1,185,353.70-728,999.80

Finding the Fourth Proportional to 791,985.40, 1,185,353.70 and 728,999.80

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Solution

The fourth proportional to 791,985.40, 1,185,353.70 and 728,999.80 is: 1,091,084.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,985.40 : 1,185,353.70 = 728,999.80 : x
  2. Step 2: Convert to fraction form
    791,985.40/1,185,353.70 = 728,999.80/x
  3. Step 3: Cross multiply
    791,985.40x = 1,185,353.70 × 728,999.80
  4. Step 4: Simplify right side
    791,985.40x = 864,122,610,229.26
  5. Step 5: Solve for x
    x = 864,122,610,229.26/791,985.40
  6. Step 6: Final answer
    x = 1,091,084.02

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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.