Home / 920,450.40-1,380,769.80-352,308.80

Finding the Fourth Proportional to 920,450.40, 1,380,769.80 and 352,308.80

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Solution

The fourth proportional to 920,450.40, 1,380,769.80 and 352,308.80 is: 528,499.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,450.40 : 1,380,769.80 = 352,308.80 : x
  2. Step 2: Convert to fraction form
    920,450.40/1,380,769.80 = 352,308.80/x
  3. Step 3: Cross multiply
    920,450.40x = 1,380,769.80 × 352,308.80
  4. Step 4: Simplify right side
    920,450.40x = 486,457,351,314.24
  5. Step 5: Solve for x
    x = 486,457,351,314.24/920,450.40
  6. Step 6: Final answer
    x = 528,499.26

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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.