Home / 939,563.36-1,409,347.77-399,680.54

Finding the Fourth Proportional to 939,563.36, 1,409,347.77 and 399,680.54

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Solution

The fourth proportional to 939,563.36, 1,409,347.77 and 399,680.54 is: 599,521.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,563.36 : 1,409,347.77 = 399,680.54 : x
  2. Step 2: Convert to fraction form
    939,563.36/1,409,347.77 = 399,680.54/x
  3. Step 3: Cross multiply
    939,563.36x = 1,409,347.77 × 399,680.54
  4. Step 4: Simplify right side
    939,563.36x = 563,288,877,761.40
  5. Step 5: Solve for x
    x = 563,288,877,761.40/939,563.36
  6. Step 6: Final answer
    x = 599,521.97

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1.5x scale

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.