Home / 1,284,480.06-1,918,907.72-831,510.78

Finding the Fourth Proportional to 1,284,480.06, 1,918,907.72 and 831,510.78

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Solution

The fourth proportional to 1,284,480.06, 1,918,907.72 and 831,510.78 is: 1,242,208.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,480.06 : 1,918,907.72 = 831,510.78 : x
  2. Step 2: Convert to fraction form
    1,284,480.06/1,918,907.72 = 831,510.78/x
  3. Step 3: Cross multiply
    1,284,480.06x = 1,918,907.72 × 831,510.78
  4. Step 4: Simplify right side
    1,284,480.06x = 1,595,592,450,847.67
  5. Step 5: Solve for x
    x = 1,595,592,450,847.67/1,284,480.06
  6. Step 6: Final answer
    x = 1,242,208.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.