Home / 890,418.28-1,336,065.90-417,021.88

Finding the Fourth Proportional to 890,418.28, 1,336,065.90 and 417,021.88

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Solution

The fourth proportional to 890,418.28, 1,336,065.90 and 417,021.88 is: 625,738.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,418.28 : 1,336,065.90 = 417,021.88 : x
  2. Step 2: Convert to fraction form
    890,418.28/1,336,065.90 = 417,021.88/x
  3. Step 3: Cross multiply
    890,418.28x = 1,336,065.90 × 417,021.88
  4. Step 4: Simplify right side
    890,418.28x = 557,168,713,421.89
  5. Step 5: Solve for x
    x = 557,168,713,421.89/890,418.28
  6. Step 6: Final answer
    x = 625,738.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.