Home / 1,290,626.64-1,781,107.91-709,874.26

Finding the Fourth Proportional to 1,290,626.64, 1,781,107.91 and 709,874.26

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Solution

The fourth proportional to 1,290,626.64, 1,781,107.91 and 709,874.26 is: 979,650.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,626.64 : 1,781,107.91 = 709,874.26 : x
  2. Step 2: Convert to fraction form
    1,290,626.64/1,781,107.91 = 709,874.26/x
  3. Step 3: Cross multiply
    1,290,626.64x = 1,781,107.91 × 709,874.26
  4. Step 4: Simplify right side
    1,290,626.64x = 1,264,362,656,913.31
  5. Step 5: Solve for x
    x = 1,264,362,656,913.31/1,290,626.64
  6. Step 6: Final answer
    x = 979,650.21

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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.