Home / 685,584.54-945,877.50-399,043.80

Finding the Fourth Proportional to 685,584.54, 945,877.50 and 399,043.80

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Solution

The fourth proportional to 685,584.54, 945,877.50 and 399,043.80 is: 550,547.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,584.54 : 945,877.50 = 399,043.80 : x
  2. Step 2: Convert to fraction form
    685,584.54/945,877.50 = 399,043.80/x
  3. Step 3: Cross multiply
    685,584.54x = 945,877.50 × 399,043.80
  4. Step 4: Simplify right side
    685,584.54x = 377,446,551,934.50
  5. Step 5: Solve for x
    x = 377,446,551,934.50/685,584.54
  6. Step 6: Final answer
    x = 550,547.06

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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.