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Finding the Fourth Proportional to 490,017.60, 734,880.32 and 190,544.64

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Solution

The fourth proportional to 490,017.60, 734,880.32 and 190,544.64 is: 285,760.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,017.60 : 734,880.32 = 190,544.64 : x
  2. Step 2: Convert to fraction form
    490,017.60/734,880.32 = 190,544.64/x
  3. Step 3: Cross multiply
    490,017.60x = 734,880.32 × 190,544.64
  4. Step 4: Simplify right side
    490,017.60x = 140,027,506,017.49
  5. Step 5: Solve for x
    x = 140,027,506,017.49/490,017.60
  6. Step 6: Final answer
    x = 285,760.16

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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.