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Finding the Fourth Proportional to 603,743.70, 905,615.55 and 426,596.70

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Solution

The fourth proportional to 603,743.70, 905,615.55 and 426,596.70 is: 639,895.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,743.70 : 905,615.55 = 426,596.70 : x
  2. Step 2: Convert to fraction form
    603,743.70/905,615.55 = 426,596.70/x
  3. Step 3: Cross multiply
    603,743.70x = 905,615.55 × 426,596.70
  4. Step 4: Simplify right side
    603,743.70x = 386,332,605,098.69
  5. Step 5: Solve for x
    x = 386,332,605,098.69/603,743.70
  6. Step 6: Final answer
    x = 639,895.05

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Double scale
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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.