Home / 447,020.40-670,530.60-426,284.40

Finding the Fourth Proportional to 447,020.40, 670,530.60 and 426,284.40

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Solution

The fourth proportional to 447,020.40, 670,530.60 and 426,284.40 is: 639,426.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,020.40 : 670,530.60 = 426,284.40 : x
  2. Step 2: Convert to fraction form
    447,020.40/670,530.60 = 426,284.40/x
  3. Step 3: Cross multiply
    447,020.40x = 670,530.60 × 426,284.40
  4. Step 4: Simplify right side
    447,020.40x = 285,836,734,502.64
  5. Step 5: Solve for x
    x = 285,836,734,502.64/447,020.40
  6. Step 6: Final answer
    x = 639,426.60

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Similar ratio
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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.