Home / 1,209,879.10-1,669,603.66-666,010.02

Finding the Fourth Proportional to 1,209,879.10, 1,669,603.66 and 666,010.02

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Solution

The fourth proportional to 1,209,879.10, 1,669,603.66 and 666,010.02 is: 919,077.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,879.10 : 1,669,603.66 = 666,010.02 : x
  2. Step 2: Convert to fraction form
    1,209,879.10/1,669,603.66 = 666,010.02/x
  3. Step 3: Cross multiply
    1,209,879.10x = 1,669,603.66 × 666,010.02
  4. Step 4: Simplify right side
    1,209,879.10x = 1,111,972,766,988.67
  5. Step 5: Solve for x
    x = 1,111,972,766,988.67/1,209,879.10
  6. Step 6: Final answer
    x = 919,077.59

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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.