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Finding the Fourth Proportional to 605,428.60, 908,142.90 and 540,110.20

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Solution

The fourth proportional to 605,428.60, 908,142.90 and 540,110.20 is: 810,165.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,428.60 : 908,142.90 = 540,110.20 : x
  2. Step 2: Convert to fraction form
    605,428.60/908,142.90 = 540,110.20/x
  3. Step 3: Cross multiply
    605,428.60x = 908,142.90 × 540,110.20
  4. Step 4: Simplify right side
    605,428.60x = 490,497,243,347.58
  5. Step 5: Solve for x
    x = 490,497,243,347.58/605,428.60
  6. Step 6: Final answer
    x = 810,165.30

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Similar ratio
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1.5x scale

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.