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Finding the Fourth Proportional to 618,284.82, 926,219.84 and 426,124.88

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Solution

The fourth proportional to 618,284.82, 926,219.84 and 426,124.88 is: 638,355.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,284.82 : 926,219.84 = 426,124.88 : x
  2. Step 2: Convert to fraction form
    618,284.82/926,219.84 = 426,124.88/x
  3. Step 3: Cross multiply
    618,284.82x = 926,219.84 × 426,124.88
  4. Step 4: Simplify right side
    618,284.82x = 394,685,318,173.62
  5. Step 5: Solve for x
    x = 394,685,318,173.62/618,284.82
  6. Step 6: Final answer
    x = 638,355.18

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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.