Home / 3,117,939-4,302,768.78-1,687,155

Finding the Fourth Proportional to 3,117,939, 4,302,768.78 and 1,687,155

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Solution

The fourth proportional to 3,117,939, 4,302,768.78 and 1,687,155 is: 2,328,280.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117,939 : 4,302,768.78 = 1,687,155 : x
  2. Step 2: Convert to fraction form
    3,117,939/4,302,768.78 = 1,687,155/x
  3. Step 3: Cross multiply
    3,117,939x = 4,302,768.78 × 1,687,155
  4. Step 4: Simplify right side
    3,117,939x = 7,259,437,861,020.90
  5. Step 5: Solve for x
    x = 7,259,437,861,020.90/3,117,939
  6. Step 6: Final answer
    x = 2,328,280.91

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1.5x scale

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.