Home / 641,496.18-885,265.80-355,016.34

Finding the Fourth Proportional to 641,496.18, 885,265.80 and 355,016.34

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Solution

The fourth proportional to 641,496.18, 885,265.80 and 355,016.34 is: 489,923.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,496.18 : 885,265.80 = 355,016.34 : x
  2. Step 2: Convert to fraction form
    641,496.18/885,265.80 = 355,016.34/x
  3. Step 3: Cross multiply
    641,496.18x = 885,265.80 × 355,016.34
  4. Step 4: Simplify right side
    641,496.18x = 314,283,824,243.17
  5. Step 5: Solve for x
    x = 314,283,824,243.17/641,496.18
  6. Step 6: Final answer
    x = 489,923.14

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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.