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Finding the Fourth Proportional to 603,911.40, 905,867.10 and 404,845.80

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Solution

The fourth proportional to 603,911.40, 905,867.10 and 404,845.80 is: 607,268.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,911.40 : 905,867.10 = 404,845.80 : x
  2. Step 2: Convert to fraction form
    603,911.40/905,867.10 = 404,845.80/x
  3. Step 3: Cross multiply
    603,911.40x = 905,867.10 × 404,845.80
  4. Step 4: Simplify right side
    603,911.40x = 366,736,490,793.18
  5. Step 5: Solve for x
    x = 366,736,490,793.18/603,911.40
  6. Step 6: Final answer
    x = 607,268.70

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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.