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Finding the Fourth Proportional to 786,003.60, 1,179,005.40 and 728,266.80

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Solution

The fourth proportional to 786,003.60, 1,179,005.40 and 728,266.80 is: 1,092,400.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,003.60 : 1,179,005.40 = 728,266.80 : x
  2. Step 2: Convert to fraction form
    786,003.60/1,179,005.40 = 728,266.80/x
  3. Step 3: Cross multiply
    786,003.60x = 1,179,005.40 × 728,266.80
  4. Step 4: Simplify right side
    786,003.60x = 858,630,489,840.72
  5. Step 5: Solve for x
    x = 858,630,489,840.72/786,003.60
  6. Step 6: Final answer
    x = 1,092,400.20

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1.5x scale

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.