Home / 777,779.40-1,166,669.10-279,078.60

Finding the Fourth Proportional to 777,779.40, 1,166,669.10 and 279,078.60

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Solution

The fourth proportional to 777,779.40, 1,166,669.10 and 279,078.60 is: 418,617.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,779.40 : 1,166,669.10 = 279,078.60 : x
  2. Step 2: Convert to fraction form
    777,779.40/1,166,669.10 = 279,078.60/x
  3. Step 3: Cross multiply
    777,779.40x = 1,166,669.10 × 279,078.60
  4. Step 4: Simplify right side
    777,779.40x = 325,592,379,091.26
  5. Step 5: Solve for x
    x = 325,592,379,091.26/777,779.40
  6. Step 6: Final answer
    x = 418,617.90

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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.