Home / 1,289,517.93-1,779,698.39-780,224.49

Finding the Fourth Proportional to 1,289,517.93, 1,779,698.39 and 780,224.49

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Solution

The fourth proportional to 1,289,517.93, 1,779,698.39 and 780,224.49 is: 1,076,808.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,517.93 : 1,779,698.39 = 780,224.49 : x
  2. Step 2: Convert to fraction form
    1,289,517.93/1,779,698.39 = 780,224.49/x
  3. Step 3: Cross multiply
    1,289,517.93x = 1,779,698.39 × 780,224.49
  4. Step 4: Simplify right side
    1,289,517.93x = 1,388,564,264,790.45
  5. Step 5: Solve for x
    x = 1,388,564,264,790.45/1,289,517.93
  6. Step 6: Final answer
    x = 1,076,808.81

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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.