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Finding the Fourth Proportional to 603,986.30, 906,088.80 and 303,711.20

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Solution

The fourth proportional to 603,986.30, 906,088.80 and 303,711.20 is: 455,621.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,986.30 : 906,088.80 = 303,711.20 : x
  2. Step 2: Convert to fraction form
    603,986.30/906,088.80 = 303,711.20/x
  3. Step 3: Cross multiply
    603,986.30x = 906,088.80 × 303,711.20
  4. Step 4: Simplify right side
    603,986.30x = 275,189,316,754.56
  5. Step 5: Solve for x
    x = 275,189,316,754.56/603,986.30
  6. Step 6: Final answer
    x = 455,621.79

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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.