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Finding the Fourth Proportional to 603,634.80, 905,561.55 and 303,359.70

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Solution

The fourth proportional to 603,634.80, 905,561.55 and 303,359.70 is: 455,094.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,634.80 : 905,561.55 = 303,359.70 : x
  2. Step 2: Convert to fraction form
    603,634.80/905,561.55 = 303,359.70/x
  3. Step 3: Cross multiply
    603,634.80x = 905,561.55 × 303,359.70
  4. Step 4: Simplify right side
    603,634.80x = 274,710,880,139.54
  5. Step 5: Solve for x
    x = 274,710,880,139.54/603,634.80
  6. Step 6: Final answer
    x = 455,094.50

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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.