Home / 1,390,338-2,085,519.78-548,889.75

Finding the Fourth Proportional to 1,390,338, 2,085,519.78 and 548,889.75

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Solution

The fourth proportional to 1,390,338, 2,085,519.78 and 548,889.75 is: 823,339.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,338 : 2,085,519.78 = 548,889.75 : x
  2. Step 2: Convert to fraction form
    1,390,338/2,085,519.78 = 548,889.75/x
  3. Step 3: Cross multiply
    1,390,338x = 2,085,519.78 × 548,889.75
  4. Step 4: Simplify right side
    1,390,338x = 1,144,720,430,664.26
  5. Step 5: Solve for x
    x = 1,144,720,430,664.26/1,390,338
  6. Step 6: Final answer
    x = 823,339.67

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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.