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Finding the Fourth Proportional to 618,199.15, 925,701.74 and 426,664.76

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Solution

The fourth proportional to 618,199.15, 925,701.74 and 426,664.76 is: 638,894.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,199.15 : 925,701.74 = 426,664.76 : x
  2. Step 2: Convert to fraction form
    618,199.15/925,701.74 = 426,664.76/x
  3. Step 3: Cross multiply
    618,199.15x = 925,701.74 × 426,664.76
  4. Step 4: Simplify right side
    618,199.15x = 394,964,311,976.28
  5. Step 5: Solve for x
    x = 394,964,311,976.28/618,199.15
  6. Step 6: Final answer
    x = 638,894.95

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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.