Home / 626,539.20-939,808.80-311,611.20

Finding the Fourth Proportional to 626,539.20, 939,808.80 and 311,611.20

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Solution

The fourth proportional to 626,539.20, 939,808.80 and 311,611.20 is: 467,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,539.20 : 939,808.80 = 311,611.20 : x
  2. Step 2: Convert to fraction form
    626,539.20/939,808.80 = 311,611.20/x
  3. Step 3: Cross multiply
    626,539.20x = 939,808.80 × 311,611.20
  4. Step 4: Simplify right side
    626,539.20x = 292,854,947,938.56
  5. Step 5: Solve for x
    x = 292,854,947,938.56/626,539.20
  6. Step 6: Final answer
    x = 467,416.80

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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.