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Finding the Fourth Proportional to 490,130.80, 735,196.20 and 486,631.60

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Solution

The fourth proportional to 490,130.80, 735,196.20 and 486,631.60 is: 729,947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,130.80 : 735,196.20 = 486,631.60 : x
  2. Step 2: Convert to fraction form
    490,130.80/735,196.20 = 486,631.60/x
  3. Step 3: Cross multiply
    490,130.80x = 735,196.20 × 486,631.60
  4. Step 4: Simplify right side
    490,130.80x = 357,769,703,119.92
  5. Step 5: Solve for x
    x = 357,769,703,119.92/490,130.80
  6. Step 6: Final answer
    x = 729,947.40

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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.