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Finding the Fourth Proportional to 605,368.10, 908,052.15 and 339,647.60

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Solution

The fourth proportional to 605,368.10, 908,052.15 and 339,647.60 is: 509,471.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,368.10 : 908,052.15 = 339,647.60 : x
  2. Step 2: Convert to fraction form
    605,368.10/908,052.15 = 339,647.60/x
  3. Step 3: Cross multiply
    605,368.10x = 908,052.15 × 339,647.60
  4. Step 4: Simplify right side
    605,368.10x = 308,417,733,422.34
  5. Step 5: Solve for x
    x = 308,417,733,422.34/605,368.10
  6. Step 6: Final answer
    x = 509,471.40

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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.