Home / 1,382,939.12-1,907,187.72-947,988.56

Finding the Fourth Proportional to 1,382,939.12, 1,907,187.72 and 947,988.56

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Solution

The fourth proportional to 1,382,939.12, 1,907,187.72 and 947,988.56 is: 1,307,354.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,939.12 : 1,907,187.72 = 947,988.56 : x
  2. Step 2: Convert to fraction form
    1,382,939.12/1,907,187.72 = 947,988.56/x
  3. Step 3: Cross multiply
    1,382,939.12x = 1,907,187.72 × 947,988.56
  4. Step 4: Simplify right side
    1,382,939.12x = 1,807,992,140,332.48
  5. Step 5: Solve for x
    x = 1,807,992,140,332.48/1,382,939.12
  6. Step 6: Final answer
    x = 1,307,354.83

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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.