Home / 1,289,516.68-1,779,696.66-780,223.24

Finding the Fourth Proportional to 1,289,516.68, 1,779,696.66 and 780,223.24

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Solution

The fourth proportional to 1,289,516.68, 1,779,696.66 and 780,223.24 is: 1,076,807.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,516.68 : 1,779,696.66 = 780,223.24 : x
  2. Step 2: Convert to fraction form
    1,289,516.68/1,779,696.66 = 780,223.24/x
  3. Step 3: Cross multiply
    1,289,516.68x = 1,779,696.66 × 780,223.24
  4. Step 4: Simplify right side
    1,289,516.68x = 1,388,560,694,282.38
  5. Step 5: Solve for x
    x = 1,388,560,694,282.38/1,289,516.68
  6. Step 6: Final answer
    x = 1,076,807.08

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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.