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Finding the Fourth Proportional to 446,866.40, 670,299.60 and 426,130.40

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Solution

The fourth proportional to 446,866.40, 670,299.60 and 426,130.40 is: 639,195.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,866.40 : 670,299.60 = 426,130.40 : x
  2. Step 2: Convert to fraction form
    446,866.40/670,299.60 = 426,130.40/x
  3. Step 3: Cross multiply
    446,866.40x = 670,299.60 × 426,130.40
  4. Step 4: Simplify right side
    446,866.40x = 285,635,036,667.84
  5. Step 5: Solve for x
    x = 285,635,036,667.84/446,866.40
  6. Step 6: Final answer
    x = 639,195.60

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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.