Home / 1,260,805.90-1,891,208.85-1,111,215.10

Finding the Fourth Proportional to 1,260,805.90, 1,891,208.85 and 1,111,215.10

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Solution

The fourth proportional to 1,260,805.90, 1,891,208.85 and 1,111,215.10 is: 1,666,822.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,805.90 : 1,891,208.85 = 1,111,215.10 : x
  2. Step 2: Convert to fraction form
    1,260,805.90/1,891,208.85 = 1,111,215.10/x
  3. Step 3: Cross multiply
    1,260,805.90x = 1,891,208.85 × 1,111,215.10
  4. Step 4: Simplify right side
    1,260,805.90x = 2,101,539,831,373.64
  5. Step 5: Solve for x
    x = 2,101,539,831,373.64/1,260,805.90
  6. Step 6: Final answer
    x = 1,666,822.65

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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.