Home / 1,315,379,739.53-1,815,457,927.72-786,801,877.92

Finding the Fourth Proportional to 1,315,379,739.53, 1,815,457,927.72 and 786,801,877.92

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Solution

The fourth proportional to 1,315,379,739.53, 1,815,457,927.72 and 786,801,877.92 is: 1,085,926,492.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,379,739.53 : 1,815,457,927.72 = 786,801,877.92 : x
  2. Step 2: Convert to fraction form
    1,315,379,739.53/1,815,457,927.72 = 786,801,877.92/x
  3. Step 3: Cross multiply
    1,315,379,739.53x = 1,815,457,927.72 × 786,801,877.92
  4. Step 4: Simplify right side
    1,315,379,739.53x = 1,428,405,706,801,836,288
  5. Step 5: Solve for x
    x = 1,428,405,706,801,836,288/1,315,379,739.53
  6. Step 6: Final answer
    x = 1,085,926,492.46

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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.