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Finding the Fourth Proportional to 603,148.20, 903,410.10 and 485,050.20

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Solution

The fourth proportional to 603,148.20, 903,410.10 and 485,050.20 is: 726,520.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,148.20 : 903,410.10 = 485,050.20 : x
  2. Step 2: Convert to fraction form
    603,148.20/903,410.10 = 485,050.20/x
  3. Step 3: Cross multiply
    603,148.20x = 903,410.10 × 485,050.20
  4. Step 4: Simplify right side
    603,148.20x = 438,199,249,687.02
  5. Step 5: Solve for x
    x = 438,199,249,687.02/603,148.20
  6. Step 6: Final answer
    x = 726,520.03

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Double scale
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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.