Home / 790,954.56-1,091,516.89-428,378.40

Finding the Fourth Proportional to 790,954.56, 1,091,516.89 and 428,378.40

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Solution

The fourth proportional to 790,954.56, 1,091,516.89 and 428,378.40 is: 591,161.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,954.56 : 1,091,516.89 = 428,378.40 : x
  2. Step 2: Convert to fraction form
    790,954.56/1,091,516.89 = 428,378.40/x
  3. Step 3: Cross multiply
    790,954.56x = 1,091,516.89 × 428,378.40
  4. Step 4: Simplify right side
    790,954.56x = 467,582,258,911.18
  5. Step 5: Solve for x
    x = 467,582,258,911.18/790,954.56
  6. Step 6: Final answer
    x = 591,161.97

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1.5x scale

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.