Home / 1,236,269,087.81-1,854,690,464.28-407,192,978.05

Finding the Fourth Proportional to 1,236,269,087.81, 1,854,690,464.28 and 407,192,978.05

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Solution

The fourth proportional to 1,236,269,087.81, 1,854,690,464.28 and 407,192,978.05 is: 610,883,941.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236,269,087.81 : 1,854,690,464.28 = 407,192,978.05 : x
  2. Step 2: Convert to fraction form
    1,236,269,087.81/1,854,690,464.28 = 407,192,978.05/x
  3. Step 3: Cross multiply
    1,236,269,087.81x = 1,854,690,464.28 × 407,192,978.05
  4. Step 4: Simplify right side
    1,236,269,087.81x = 755,216,933,508,020,992
  5. Step 5: Solve for x
    x = 755,216,933,508,020,992/1,236,269,087.81
  6. Step 6: Final answer
    x = 610,883,941.82

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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.