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Finding the Fourth Proportional to 845,968.90, 1,268,658.19 and 340,398.90

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Solution

The fourth proportional to 845,968.90, 1,268,658.19 and 340,398.90 is: 510,479.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    845,968.90 : 1,268,658.19 = 340,398.90 : x
  2. Step 2: Convert to fraction form
    845,968.90/1,268,658.19 = 340,398.90/x
  3. Step 3: Cross multiply
    845,968.90x = 1,268,658.19 × 340,398.90
  4. Step 4: Simplify right side
    845,968.90x = 431,849,852,351.99
  5. Step 5: Solve for x
    x = 431,849,852,351.99/845,968.90
  6. Step 6: Final answer
    x = 510,479.58

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.