Home / 919,225.15-1,379,059.22-288,138.96

Finding the Fourth Proportional to 919,225.15, 1,379,059.22 and 288,138.96

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Solution

The fourth proportional to 919,225.15, 1,379,059.22 and 288,138.96 is: 432,277.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,225.15 : 1,379,059.22 = 288,138.96 : x
  2. Step 2: Convert to fraction form
    919,225.15/1,379,059.22 = 288,138.96/x
  3. Step 3: Cross multiply
    919,225.15x = 1,379,059.22 × 288,138.96
  4. Step 4: Simplify right side
    919,225.15x = 397,360,691,436.17
  5. Step 5: Solve for x
    x = 397,360,691,436.17/919,225.15
  6. Step 6: Final answer
    x = 432,277.87

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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.