Home / 287,395,427.70-431,093,141.55-270,389,315.70

Finding the Fourth Proportional to 287,395,427.70, 431,093,141.55 and 270,389,315.70

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Solution

The fourth proportional to 287,395,427.70, 431,093,141.55 and 270,389,315.70 is: 405,583,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,395,427.70 : 431,093,141.55 = 270,389,315.70 : x
  2. Step 2: Convert to fraction form
    287,395,427.70/431,093,141.55 = 270,389,315.70/x
  3. Step 3: Cross multiply
    287,395,427.70x = 431,093,141.55 × 270,389,315.70
  4. Step 4: Simplify right side
    287,395,427.70x = 116,562,979,546,667,728
  5. Step 5: Solve for x
    x = 116,562,979,546,667,728/287,395,427.70
  6. Step 6: Final answer
    x = 405,583,973.55

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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.