Home / 772,431.60-1,158,647.40-740,938.80

Finding the Fourth Proportional to 772,431.60, 1,158,647.40 and 740,938.80

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Solution

The fourth proportional to 772,431.60, 1,158,647.40 and 740,938.80 is: 1,111,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,431.60 : 1,158,647.40 = 740,938.80 : x
  2. Step 2: Convert to fraction form
    772,431.60/1,158,647.40 = 740,938.80/x
  3. Step 3: Cross multiply
    772,431.60x = 1,158,647.40 × 740,938.80
  4. Step 4: Simplify right side
    772,431.60x = 858,486,814,179.12
  5. Step 5: Solve for x
    x = 858,486,814,179.12/772,431.60
  6. Step 6: Final answer
    x = 1,111,408.20

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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.