Home / 655,619.20-983,428.80-456,553.60

Finding the Fourth Proportional to 655,619.20, 983,428.80 and 456,553.60

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Solution

The fourth proportional to 655,619.20, 983,428.80 and 456,553.60 is: 684,830.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,619.20 : 983,428.80 = 456,553.60 : x
  2. Step 2: Convert to fraction form
    655,619.20/983,428.80 = 456,553.60/x
  3. Step 3: Cross multiply
    655,619.20x = 983,428.80 × 456,553.60
  4. Step 4: Simplify right side
    655,619.20x = 448,987,958,983.68
  5. Step 5: Solve for x
    x = 448,987,958,983.68/655,619.20
  6. Step 6: Final answer
    x = 684,830.40

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Similar ratio
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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.