Home / 605,439.60-908,159.40-540,121.20

Finding the Fourth Proportional to 605,439.60, 908,159.40 and 540,121.20

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Solution

The fourth proportional to 605,439.60, 908,159.40 and 540,121.20 is: 810,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,439.60 : 908,159.40 = 540,121.20 : x
  2. Step 2: Convert to fraction form
    605,439.60/908,159.40 = 540,121.20/x
  3. Step 3: Cross multiply
    605,439.60x = 908,159.40 × 540,121.20
  4. Step 4: Simplify right side
    605,439.60x = 490,516,144,919.28
  5. Step 5: Solve for x
    x = 490,516,144,919.28/605,439.60
  6. Step 6: Final answer
    x = 810,181.80

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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.