Home / 864,081.60-1,296,122.40-438,928.80

Finding the Fourth Proportional to 864,081.60, 1,296,122.40 and 438,928.80

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Solution

The fourth proportional to 864,081.60, 1,296,122.40 and 438,928.80 is: 658,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,081.60 : 1,296,122.40 = 438,928.80 : x
  2. Step 2: Convert to fraction form
    864,081.60/1,296,122.40 = 438,928.80/x
  3. Step 3: Cross multiply
    864,081.60x = 1,296,122.40 × 438,928.80
  4. Step 4: Simplify right side
    864,081.60x = 568,905,449,685.12
  5. Step 5: Solve for x
    x = 568,905,449,685.12/864,081.60
  6. Step 6: Final answer
    x = 658,393.20

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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.