Home / 1,272,678.96-1,908,612.48-419,591.64

Finding the Fourth Proportional to 1,272,678.96, 1,908,612.48 and 419,591.64

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Solution

The fourth proportional to 1,272,678.96, 1,908,612.48 and 419,591.64 is: 629,253.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,678.96 : 1,908,612.48 = 419,591.64 : x
  2. Step 2: Convert to fraction form
    1,272,678.96/1,908,612.48 = 419,591.64/x
  3. Step 3: Cross multiply
    1,272,678.96x = 1,908,612.48 × 419,591.64
  4. Step 4: Simplify right side
    1,272,678.96x = 800,837,840,607.67
  5. Step 5: Solve for x
    x = 800,837,840,607.67/1,272,678.96
  6. Step 6: Final answer
    x = 629,253.62

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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.