Home / 1,222,399.72-1,686,827.16-678,492.76

Finding the Fourth Proportional to 1,222,399.72, 1,686,827.16 and 678,492.76

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Solution

The fourth proportional to 1,222,399.72, 1,686,827.16 and 678,492.76 is: 936,273.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,399.72 : 1,686,827.16 = 678,492.76 : x
  2. Step 2: Convert to fraction form
    1,222,399.72/1,686,827.16 = 678,492.76/x
  3. Step 3: Cross multiply
    1,222,399.72x = 1,686,827.16 × 678,492.76
  4. Step 4: Simplify right side
    1,222,399.72x = 1,144,500,015,431.36
  5. Step 5: Solve for x
    x = 1,144,500,015,431.36/1,222,399.72
  6. Step 6: Final answer
    x = 936,273.13

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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.