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Finding the Fourth Proportional to 768,040.40, 1,152,060.60 and 724,494.80

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Solution

The fourth proportional to 768,040.40, 1,152,060.60 and 724,494.80 is: 1,086,742.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,040.40 : 1,152,060.60 = 724,494.80 : x
  2. Step 2: Convert to fraction form
    768,040.40/1,152,060.60 = 724,494.80/x
  3. Step 3: Cross multiply
    768,040.40x = 1,152,060.60 × 724,494.80
  4. Step 4: Simplify right side
    768,040.40x = 834,661,913,984.88
  5. Step 5: Solve for x
    x = 834,661,913,984.88/768,040.40
  6. Step 6: Final answer
    x = 1,086,742.20

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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.