Home / 455,470.20-681,650.10-418,145.40

Finding the Fourth Proportional to 455,470.20, 681,650.10 and 418,145.40

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Solution

The fourth proportional to 455,470.20, 681,650.10 and 418,145.40 is: 625,790.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,470.20 : 681,650.10 = 418,145.40 : x
  2. Step 2: Convert to fraction form
    455,470.20/681,650.10 = 418,145.40/x
  3. Step 3: Cross multiply
    455,470.20x = 681,650.10 × 418,145.40
  4. Step 4: Simplify right side
    455,470.20x = 285,028,853,724.54
  5. Step 5: Solve for x
    x = 285,028,853,724.54/455,470.20
  6. Step 6: Final answer
    x = 625,790.35

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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.