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Finding the Fourth Proportional to 618,278.83, 926,210.84 and 426,118.88

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Solution

The fourth proportional to 618,278.83, 926,210.84 and 426,118.88 is: 638,346.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,278.83 : 926,210.84 = 426,118.88 : x
  2. Step 2: Convert to fraction form
    618,278.83/926,210.84 = 426,118.88/x
  3. Step 3: Cross multiply
    618,278.83x = 926,210.84 × 426,118.88
  4. Step 4: Simplify right side
    618,278.83x = 394,675,925,969.59
  5. Step 5: Solve for x
    x = 394,675,925,969.59/618,278.83
  6. Step 6: Final answer
    x = 638,346.18

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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.