Home / 626,180.80-939,789.60-289,739.20

Finding the Fourth Proportional to 626,180.80, 939,789.60 and 289,739.20

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Solution

The fourth proportional to 626,180.80, 939,789.60 and 289,739.20 is: 434,848.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,180.80 : 939,789.60 = 289,739.20 : x
  2. Step 2: Convert to fraction form
    626,180.80/939,789.60 = 289,739.20/x
  3. Step 3: Cross multiply
    626,180.80x = 939,789.60 × 289,739.20
  4. Step 4: Simplify right side
    626,180.80x = 272,293,886,872.32
  5. Step 5: Solve for x
    x = 272,293,886,872.32/626,180.80
  6. Step 6: Final answer
    x = 434,848.67

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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.