Home / 1,440,080.19-1,987,311.78-786,715.20

Finding the Fourth Proportional to 1,440,080.19, 1,987,311.78 and 786,715.20

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Solution

The fourth proportional to 1,440,080.19, 1,987,311.78 and 786,715.20 is: 1,085,667.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,080.19 : 1,987,311.78 = 786,715.20 : x
  2. Step 2: Convert to fraction form
    1,440,080.19/1,987,311.78 = 786,715.20/x
  3. Step 3: Cross multiply
    1,440,080.19x = 1,987,311.78 × 786,715.20
  4. Step 4: Simplify right side
    1,440,080.19x = 1,563,448,384,465.06
  5. Step 5: Solve for x
    x = 1,563,448,384,465.06/1,440,080.19
  6. Step 6: Final answer
    x = 1,085,667.59

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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.