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Finding the Fourth Proportional to 446,749.20, 670,123.80 and 397,760.40

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Solution

The fourth proportional to 446,749.20, 670,123.80 and 397,760.40 is: 596,640.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,749.20 : 670,123.80 = 397,760.40 : x
  2. Step 2: Convert to fraction form
    446,749.20/670,123.80 = 397,760.40/x
  3. Step 3: Cross multiply
    446,749.20x = 670,123.80 × 397,760.40
  4. Step 4: Simplify right side
    446,749.20x = 266,548,710,737.52
  5. Step 5: Solve for x
    x = 266,548,710,737.52/446,749.20
  6. Step 6: Final answer
    x = 596,640.60

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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.