Home / 1,315,731.36-1,815,724.14-771,876.39

Finding the Fourth Proportional to 1,315,731.36, 1,815,724.14 and 771,876.39

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Solution

The fourth proportional to 1,315,731.36, 1,815,724.14 and 771,876.39 is: 1,065,198.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,731.36 : 1,815,724.14 = 771,876.39 : x
  2. Step 2: Convert to fraction form
    1,315,731.36/1,815,724.14 = 771,876.39/x
  3. Step 3: Cross multiply
    1,315,731.36x = 1,815,724.14 × 771,876.39
  4. Step 4: Simplify right side
    1,315,731.36x = 1,401,514,594,419.05
  5. Step 5: Solve for x
    x = 1,401,514,594,419.05/1,315,731.36
  6. Step 6: Final answer
    x = 1,065,198.14

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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.