Home / 1,189,719.58-1,641,815.07-680,421.95

Finding the Fourth Proportional to 1,189,719.58, 1,641,815.07 and 680,421.95

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Solution

The fourth proportional to 1,189,719.58, 1,641,815.07 and 680,421.95 is: 938,983.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,719.58 : 1,641,815.07 = 680,421.95 : x
  2. Step 2: Convert to fraction form
    1,189,719.58/1,641,815.07 = 680,421.95/x
  3. Step 3: Cross multiply
    1,189,719.58x = 1,641,815.07 × 680,421.95
  4. Step 4: Simplify right side
    1,189,719.58x = 1,117,127,013,872.27
  5. Step 5: Solve for x
    x = 1,117,127,013,872.27/1,189,719.58
  6. Step 6: Final answer
    x = 938,983.47

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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.