Home / 919,223.96-1,379,057.43-288,137.76

Finding the Fourth Proportional to 919,223.96, 1,379,057.43 and 288,137.76

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Solution

The fourth proportional to 919,223.96, 1,379,057.43 and 288,137.76 is: 432,276.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,223.96 : 1,379,057.43 = 288,137.76 : x
  2. Step 2: Convert to fraction form
    919,223.96/1,379,057.43 = 288,137.76/x
  3. Step 3: Cross multiply
    919,223.96x = 1,379,057.43 × 288,137.76
  4. Step 4: Simplify right side
    919,223.96x = 397,358,518,791.56
  5. Step 5: Solve for x
    x = 397,358,518,791.56/919,223.96
  6. Step 6: Final answer
    x = 432,276.07

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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.