Home / 1,289,338.41-1,931,349.78-755,240.19

Finding the Fourth Proportional to 1,289,338.41, 1,931,349.78 and 755,240.19

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Solution

The fourth proportional to 1,289,338.41, 1,931,349.78 and 755,240.19 is: 1,131,303.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,338.41 : 1,931,349.78 = 755,240.19 : x
  2. Step 2: Convert to fraction form
    1,289,338.41/1,931,349.78 = 755,240.19/x
  3. Step 3: Cross multiply
    1,289,338.41x = 1,931,349.78 × 755,240.19
  4. Step 4: Simplify right side
    1,289,338.41x = 1,458,632,974,803.66
  5. Step 5: Solve for x
    x = 1,458,632,974,803.66/1,289,338.41
  6. Step 6: Final answer
    x = 1,131,303.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.