Home / 815,175.03-1,123,091.06-630,779.60

Finding the Fourth Proportional to 815,175.03, 1,123,091.06 and 630,779.60

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Solution

The fourth proportional to 815,175.03, 1,123,091.06 and 630,779.60 is: 869,043.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,175.03 : 1,123,091.06 = 630,779.60 : x
  2. Step 2: Convert to fraction form
    815,175.03/1,123,091.06 = 630,779.60/x
  3. Step 3: Cross multiply
    815,175.03x = 1,123,091.06 × 630,779.60
  4. Step 4: Simplify right side
    815,175.03x = 708,422,929,590.38
  5. Step 5: Solve for x
    x = 708,422,929,590.38/815,175.03
  6. Step 6: Final answer
    x = 869,043.96

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.