Home / 1,291,839.69-1,782,258.55-1,289,846.79

Finding the Fourth Proportional to 1,291,839.69, 1,782,258.55 and 1,289,846.79

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Solution

The fourth proportional to 1,291,839.69, 1,782,258.55 and 1,289,846.79 is: 1,779,509.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,839.69 : 1,782,258.55 = 1,289,846.79 : x
  2. Step 2: Convert to fraction form
    1,291,839.69/1,782,258.55 = 1,289,846.79/x
  3. Step 3: Cross multiply
    1,291,839.69x = 1,782,258.55 × 1,289,846.79
  4. Step 4: Simplify right side
    1,291,839.69x = 2,298,840,460,756.26
  5. Step 5: Solve for x
    x = 2,298,840,460,756.26/1,291,839.69
  6. Step 6: Final answer
    x = 1,779,509.08

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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.