Home / 1,938,387.80-2,907,581-518,407

Finding the Fourth Proportional to 1,938,387.80, 2,907,581 and 518,407

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Solution

The fourth proportional to 1,938,387.80, 2,907,581 and 518,407 is: 777,610.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938,387.80 : 2,907,581 = 518,407 : x
  2. Step 2: Convert to fraction form
    1,938,387.80/2,907,581 = 518,407/x
  3. Step 3: Cross multiply
    1,938,387.80x = 2,907,581 × 518,407
  4. Step 4: Simplify right side
    1,938,387.80x = 1,507,310,343,467
  5. Step 5: Solve for x
    x = 1,507,310,343,467/1,938,387.80
  6. Step 6: Final answer
    x = 777,610.31

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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.