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Finding the Fourth Proportional to 603,574.35, 905,786.92 and 283,740.78

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Solution

The fourth proportional to 603,574.35, 905,786.92 and 283,740.78 is: 425,811.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,574.35 : 905,786.92 = 283,740.78 : x
  2. Step 2: Convert to fraction form
    603,574.35/905,786.92 = 283,740.78/x
  3. Step 3: Cross multiply
    603,574.35x = 905,786.92 × 283,740.78
  4. Step 4: Simplify right side
    603,574.35x = 257,008,690,945.98
  5. Step 5: Solve for x
    x = 257,008,690,945.98/603,574.35
  6. Step 6: Final answer
    x = 425,811.16

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Double scale
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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.