Home / 1,229,979.01-1,697,382.08-678,719.23

Finding the Fourth Proportional to 1,229,979.01, 1,697,382.08 and 678,719.23

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Solution

The fourth proportional to 1,229,979.01, 1,697,382.08 and 678,719.23 is: 936,638.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229,979.01 : 1,697,382.08 = 678,719.23 : x
  2. Step 2: Convert to fraction form
    1,229,979.01/1,697,382.08 = 678,719.23/x
  3. Step 3: Cross multiply
    1,229,979.01x = 1,697,382.08 × 678,719.23
  4. Step 4: Simplify right side
    1,229,979.01x = 1,152,045,858,353.40
  5. Step 5: Solve for x
    x = 1,152,045,858,353.40/1,229,979.01
  6. Step 6: Final answer
    x = 936,638.63

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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.