Home / 919,231.98-1,379,069.40-288,145.79

Finding the Fourth Proportional to 919,231.98, 1,379,069.40 and 288,145.79

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Solution

The fourth proportional to 919,231.98, 1,379,069.40 and 288,145.79 is: 432,288.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,231.98 : 1,379,069.40 = 288,145.79 : x
  2. Step 2: Convert to fraction form
    919,231.98/1,379,069.40 = 288,145.79/x
  3. Step 3: Cross multiply
    919,231.98x = 1,379,069.40 × 288,145.79
  4. Step 4: Simplify right side
    919,231.98x = 397,373,047,105.08
  5. Step 5: Solve for x
    x = 397,373,047,105.08/919,231.98
  6. Step 6: Final answer
    x = 432,288.10

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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.