Home / 1,230,389.80-1,845,584.70-690,091.45

Finding the Fourth Proportional to 1,230,389.80, 1,845,584.70 and 690,091.45

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Solution

The fourth proportional to 1,230,389.80, 1,845,584.70 and 690,091.45 is: 1,035,137.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,389.80 : 1,845,584.70 = 690,091.45 : x
  2. Step 2: Convert to fraction form
    1,230,389.80/1,845,584.70 = 690,091.45/x
  3. Step 3: Cross multiply
    1,230,389.80x = 1,845,584.70 × 690,091.45
  4. Step 4: Simplify right side
    1,230,389.80x = 1,273,622,221,720.82
  5. Step 5: Solve for x
    x = 1,273,622,221,720.82/1,230,389.80
  6. Step 6: Final answer
    x = 1,035,137.18

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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.