Home / 818,512.32-1,129,509.60-455,916.48

Finding the Fourth Proportional to 818,512.32, 1,129,509.60 and 455,916.48

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Solution

The fourth proportional to 818,512.32, 1,129,509.60 and 455,916.48 is: 629,143.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,512.32 : 1,129,509.60 = 455,916.48 : x
  2. Step 2: Convert to fraction form
    818,512.32/1,129,509.60 = 455,916.48/x
  3. Step 3: Cross multiply
    818,512.32x = 1,129,509.60 × 455,916.48
  4. Step 4: Simplify right side
    818,512.32x = 514,962,040,958.21
  5. Step 5: Solve for x
    x = 514,962,040,958.21/818,512.32
  6. Step 6: Final answer
    x = 629,143.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.