Home / 1,123,969.80-1,685,954.70-1,105,307.40

Finding the Fourth Proportional to 1,123,969.80, 1,685,954.70 and 1,105,307.40

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Solution

The fourth proportional to 1,123,969.80, 1,685,954.70 and 1,105,307.40 is: 1,657,961.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,969.80 : 1,685,954.70 = 1,105,307.40 : x
  2. Step 2: Convert to fraction form
    1,123,969.80/1,685,954.70 = 1,105,307.40/x
  3. Step 3: Cross multiply
    1,123,969.80x = 1,685,954.70 × 1,105,307.40
  4. Step 4: Simplify right side
    1,123,969.80x = 1,863,498,205,974.78
  5. Step 5: Solve for x
    x = 1,863,498,205,974.78/1,123,969.80
  6. Step 6: Final answer
    x = 1,657,961.10

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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.