Home / 1,291,987.01-1,938,260.72-393,405.21

Finding the Fourth Proportional to 1,291,987.01, 1,938,260.72 and 393,405.21

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Solution

The fourth proportional to 1,291,987.01, 1,938,260.72 and 393,405.21 is: 590,193.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,987.01 : 1,938,260.72 = 393,405.21 : x
  2. Step 2: Convert to fraction form
    1,291,987.01/1,938,260.72 = 393,405.21/x
  3. Step 3: Cross multiply
    1,291,987.01x = 1,938,260.72 × 393,405.21
  4. Step 4: Simplify right side
    1,291,987.01x = 762,521,863,619.33
  5. Step 5: Solve for x
    x = 762,521,863,619.33/1,291,987.01
  6. Step 6: Final answer
    x = 590,193.14

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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.