Home / 642,150.21-886,762.96-480,725.01

Finding the Fourth Proportional to 642,150.21, 886,762.96 and 480,725.01

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Solution

The fourth proportional to 642,150.21, 886,762.96 and 480,725.01 is: 663,846.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,150.21 : 886,762.96 = 480,725.01 : x
  2. Step 2: Convert to fraction form
    642,150.21/886,762.96 = 480,725.01/x
  3. Step 3: Cross multiply
    642,150.21x = 886,762.96 × 480,725.01
  4. Step 4: Simplify right side
    642,150.21x = 426,289,131,611.82
  5. Step 5: Solve for x
    x = 426,289,131,611.82/642,150.21
  6. Step 6: Final answer
    x = 663,846.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.