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Finding the Fourth Proportional to 605,268.28, 834,989.52 and 390,477.28

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Solution

The fourth proportional to 605,268.28, 834,989.52 and 390,477.28 is: 538,677.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,268.28 : 834,989.52 = 390,477.28 : x
  2. Step 2: Convert to fraction form
    605,268.28/834,989.52 = 390,477.28/x
  3. Step 3: Cross multiply
    605,268.28x = 834,989.52 × 390,477.28
  4. Step 4: Simplify right side
    605,268.28x = 326,044,436,598.11
  5. Step 5: Solve for x
    x = 326,044,436,598.11/605,268.28
  6. Step 6: Final answer
    x = 538,677.55

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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.