Home / 1,218,014.72-1,680,863.64-674,188

Finding the Fourth Proportional to 1,218,014.72, 1,680,863.64 and 674,188

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Solution

The fourth proportional to 1,218,014.72, 1,680,863.64 and 674,188 is: 930,381.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,014.72 : 1,680,863.64 = 674,188 : x
  2. Step 2: Convert to fraction form
    1,218,014.72/1,680,863.64 = 674,188/x
  3. Step 3: Cross multiply
    1,218,014.72x = 1,680,863.64 × 674,188
  4. Step 4: Simplify right side
    1,218,014.72x = 1,133,218,095,724.32
  5. Step 5: Solve for x
    x = 1,133,218,095,724.32/1,218,014.72
  6. Step 6: Final answer
    x = 930,381.28

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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.