Home / 772,906.40-1,159,935.60-398,736.80

Finding the Fourth Proportional to 772,906.40, 1,159,935.60 and 398,736.80

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Solution

The fourth proportional to 772,906.40, 1,159,935.60 and 398,736.80 is: 598,402.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,906.40 : 1,159,935.60 = 398,736.80 : x
  2. Step 2: Convert to fraction form
    772,906.40/1,159,935.60 = 398,736.80/x
  3. Step 3: Cross multiply
    772,906.40x = 1,159,935.60 × 398,736.80
  4. Step 4: Simplify right side
    772,906.40x = 462,509,009,350.08
  5. Step 5: Solve for x
    x = 462,509,009,350.08/772,906.40
  6. Step 6: Final answer
    x = 598,402.35

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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.