Home / 1,315,728.36-1,815,720.00-771,873.40

Finding the Fourth Proportional to 1,315,728.36, 1,815,720.00 and 771,873.40

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Solution

The fourth proportional to 1,315,728.36, 1,815,720.00 and 771,873.40 is: 1,065,194.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,728.36 : 1,815,720.00 = 771,873.40 : x
  2. Step 2: Convert to fraction form
    1,315,728.36/1,815,720.00 = 771,873.40/x
  3. Step 3: Cross multiply
    1,315,728.36x = 1,815,720.00 × 771,873.40
  4. Step 4: Simplify right side
    1,315,728.36x = 1,401,505,969,223.12
  5. Step 5: Solve for x
    x = 1,401,505,969,223.12/1,315,728.36
  6. Step 6: Final answer
    x = 1,065,194.01

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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.