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Finding the Fourth Proportional to 710,351.06, 980,268.41 and 388,062.59

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Solution

The fourth proportional to 710,351.06, 980,268.41 and 388,062.59 is: 535,517.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,351.06 : 980,268.41 = 388,062.59 : x
  2. Step 2: Convert to fraction form
    710,351.06/980,268.41 = 388,062.59/x
  3. Step 3: Cross multiply
    710,351.06x = 980,268.41 × 388,062.59
  4. Step 4: Simplify right side
    710,351.06x = 380,405,494,148.60
  5. Step 5: Solve for x
    x = 380,405,494,148.60/710,351.06
  6. Step 6: Final answer
    x = 535,517.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.