Home / 641,383.86-885,097.20-354,904.14

Finding the Fourth Proportional to 641,383.86, 885,097.20 and 354,904.14

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Solution

The fourth proportional to 641,383.86, 885,097.20 and 354,904.14 is: 489,760.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,383.86 : 885,097.20 = 354,904.14 : x
  2. Step 2: Convert to fraction form
    641,383.86/885,097.20 = 354,904.14/x
  3. Step 3: Cross multiply
    641,383.86x = 885,097.20 × 354,904.14
  4. Step 4: Simplify right side
    641,383.86x = 314,124,660,582.41
  5. Step 5: Solve for x
    x = 314,124,660,582.41/641,383.86
  6. Step 6: Final answer
    x = 489,760.78

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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.