Home / 648,017.20-972,025.80-447,914.80

Finding the Fourth Proportional to 648,017.20, 972,025.80 and 447,914.80

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Solution

The fourth proportional to 648,017.20, 972,025.80 and 447,914.80 is: 671,872.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,017.20 : 972,025.80 = 447,914.80 : x
  2. Step 2: Convert to fraction form
    648,017.20/972,025.80 = 447,914.80/x
  3. Step 3: Cross multiply
    648,017.20x = 972,025.80 × 447,914.80
  4. Step 4: Simplify right side
    648,017.20x = 435,384,741,801.84
  5. Step 5: Solve for x
    x = 435,384,741,801.84/648,017.20
  6. Step 6: Final answer
    x = 671,872.20

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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.