Home / 1,315,647.64-1,815,645.90-742,707.64

Finding the Fourth Proportional to 1,315,647.64, 1,815,645.90 and 742,707.64

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Solution

The fourth proportional to 1,315,647.64, 1,815,645.90 and 742,707.64 is: 1,024,965.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,647.64 : 1,815,645.90 = 742,707.64 : x
  2. Step 2: Convert to fraction form
    1,315,647.64/1,815,645.90 = 742,707.64/x
  3. Step 3: Cross multiply
    1,315,647.64x = 1,815,645.90 × 742,707.64
  4. Step 4: Simplify right side
    1,315,647.64x = 1,348,494,081,464.68
  5. Step 5: Solve for x
    x = 1,348,494,081,464.68/1,315,647.64
  6. Step 6: Final answer
    x = 1,024,965.99

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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.