Home / 1,315,098.81-1,815,249.87-771,454.35

Finding the Fourth Proportional to 1,315,098.81, 1,815,249.87 and 771,454.35

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Solution

The fourth proportional to 1,315,098.81, 1,815,249.87 and 771,454.35 is: 1,064,849.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,098.81 : 1,815,249.87 = 771,454.35 : x
  2. Step 2: Convert to fraction form
    1,315,098.81/1,815,249.87 = 771,454.35/x
  3. Step 3: Cross multiply
    1,315,098.81x = 1,815,249.87 × 771,454.35
  4. Step 4: Simplify right side
    1,315,098.81x = 1,400,382,408,548.43
  5. Step 5: Solve for x
    x = 1,400,382,408,548.43/1,315,098.81
  6. Step 6: Final answer
    x = 1,064,849.57

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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.