Home / 919,219.89-1,379,051.31-288,133.71

Finding the Fourth Proportional to 919,219.89, 1,379,051.31 and 288,133.71

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Solution

The fourth proportional to 919,219.89, 1,379,051.31 and 288,133.71 is: 432,269.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,219.89 : 1,379,051.31 = 288,133.71 : x
  2. Step 2: Convert to fraction form
    919,219.89/1,379,051.31 = 288,133.71/x
  3. Step 3: Cross multiply
    919,219.89x = 1,379,051.31 × 288,133.71
  4. Step 4: Simplify right side
    919,219.89x = 397,351,170,230.66
  5. Step 5: Solve for x
    x = 397,351,170,230.66/919,219.89
  6. Step 6: Final answer
    x = 432,269.99

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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.