Home / 1,388,626.84-2,080,250.10-787,770.40

Finding the Fourth Proportional to 1,388,626.84, 2,080,250.10 and 787,770.40

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Solution

The fourth proportional to 1,388,626.84, 2,080,250.10 and 787,770.40 is: 1,180,129.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,626.84 : 2,080,250.10 = 787,770.40 : x
  2. Step 2: Convert to fraction form
    1,388,626.84/2,080,250.10 = 787,770.40/x
  3. Step 3: Cross multiply
    1,388,626.84x = 2,080,250.10 × 787,770.40
  4. Step 4: Simplify right side
    1,388,626.84x = 1,638,759,453,377.04
  5. Step 5: Solve for x
    x = 1,638,759,453,377.04/1,388,626.84
  6. Step 6: Final answer
    x = 1,180,129.47

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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.