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Finding the Fourth Proportional to 603,698.70, 905,548.05 and 288,770.70

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Solution

The fourth proportional to 603,698.70, 905,548.05 and 288,770.70 is: 433,156.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,698.70 : 905,548.05 = 288,770.70 : x
  2. Step 2: Convert to fraction form
    603,698.70/905,548.05 = 288,770.70/x
  3. Step 3: Cross multiply
    603,698.70x = 905,548.05 × 288,770.70
  4. Step 4: Simplify right side
    603,698.70x = 261,495,744,282.14
  5. Step 5: Solve for x
    x = 261,495,744,282.14/603,698.70
  6. Step 6: Final answer
    x = 433,156.05

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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.