Home / 919,757.43-1,379,633.63-288,718.47

Finding the Fourth Proportional to 919,757.43, 1,379,633.63 and 288,718.47

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Solution

The fourth proportional to 919,757.43, 1,379,633.63 and 288,718.47 is: 433,076.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,757.43 : 1,379,633.63 = 288,718.47 : x
  2. Step 2: Convert to fraction form
    919,757.43/1,379,633.63 = 288,718.47/x
  3. Step 3: Cross multiply
    919,757.43x = 1,379,633.63 × 288,718.47
  4. Step 4: Simplify right side
    919,757.43x = 398,325,709,370.55
  5. Step 5: Solve for x
    x = 398,325,709,370.55/919,757.43
  6. Step 6: Final answer
    x = 433,076.91

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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.