Home / 1,384,817.75-1,911,114.51-781,205.75

Finding the Fourth Proportional to 1,384,817.75, 1,911,114.51 and 781,205.75

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Solution

The fourth proportional to 1,384,817.75, 1,911,114.51 and 781,205.75 is: 1,078,101.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,817.75 : 1,911,114.51 = 781,205.75 : x
  2. Step 2: Convert to fraction form
    1,384,817.75/1,911,114.51 = 781,205.75/x
  3. Step 3: Cross multiply
    1,384,817.75x = 1,911,114.51 × 781,205.75
  4. Step 4: Simplify right side
    1,384,817.75x = 1,492,973,644,120.43
  5. Step 5: Solve for x
    x = 1,492,973,644,120.43/1,384,817.75
  6. Step 6: Final answer
    x = 1,078,101.18

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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.