Home / 492,213,907.20-738,264,873.60-128,745,004.80

Finding the Fourth Proportional to 492,213,907.20, 738,264,873.60 and 128,745,004.80

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Solution

The fourth proportional to 492,213,907.20, 738,264,873.60 and 128,745,004.80 is: 193,102,863.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,213,907.20 : 738,264,873.60 = 128,745,004.80 : x
  2. Step 2: Convert to fraction form
    492,213,907.20/738,264,873.60 = 128,745,004.80/x
  3. Step 3: Cross multiply
    492,213,907.20x = 738,264,873.60 × 128,745,004.80
  4. Step 4: Simplify right side
    492,213,907.20x = 95,047,914,695,303,392
  5. Step 5: Solve for x
    x = 95,047,914,695,303,392/492,213,907.20
  6. Step 6: Final answer
    x = 193,102,863.01

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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.