Home / 641,383.68-885,111.04-354,923.36

Finding the Fourth Proportional to 641,383.68, 885,111.04 and 354,923.36

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Solution

The fourth proportional to 641,383.68, 885,111.04 and 354,923.36 is: 489,795.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,383.68 : 885,111.04 = 354,923.36 : x
  2. Step 2: Convert to fraction form
    641,383.68/885,111.04 = 354,923.36/x
  3. Step 3: Cross multiply
    641,383.68x = 885,111.04 × 354,923.36
  4. Step 4: Simplify right side
    641,383.68x = 314,146,584,289.89
  5. Step 5: Solve for x
    x = 314,146,584,289.89/641,383.68
  6. Step 6: Final answer
    x = 489,795.10

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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.