Home / 1,315,081,028.68-1,814,123,773.20-813,129,357.64

Finding the Fourth Proportional to 1,315,081,028.68, 1,814,123,773.20 and 813,129,357.64

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Solution

The fourth proportional to 1,315,081,028.68, 1,814,123,773.20 and 813,129,357.64 is: 1,121,693,086.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,081,028.68 : 1,814,123,773.20 = 813,129,357.64 : x
  2. Step 2: Convert to fraction form
    1,315,081,028.68/1,814,123,773.20 = 813,129,357.64/x
  3. Step 3: Cross multiply
    1,315,081,028.68x = 1,814,123,773.20 × 813,129,357.64
  4. Step 4: Simplify right side
    1,315,081,028.68x = 1,475,117,298,381,569,024
  5. Step 5: Solve for x
    x = 1,475,117,298,381,569,024/1,315,081,028.68
  6. Step 6: Final answer
    x = 1,121,693,086.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.