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Finding the Fourth Proportional to 605,428.10, 908,142.15 and 540,109.70

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Solution

The fourth proportional to 605,428.10, 908,142.15 and 540,109.70 is: 810,164.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,428.10 : 908,142.15 = 540,109.70 : x
  2. Step 2: Convert to fraction form
    605,428.10/908,142.15 = 540,109.70/x
  3. Step 3: Cross multiply
    605,428.10x = 908,142.15 × 540,109.70
  4. Step 4: Simplify right side
    605,428.10x = 490,496,384,193.86
  5. Step 5: Solve for x
    x = 490,496,384,193.86/605,428.10
  6. Step 6: Final answer
    x = 810,164.55

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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.