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Finding the Fourth Proportional to 671,703.44, 926,912.04 and 403,379.60

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Solution

The fourth proportional to 671,703.44, 926,912.04 and 403,379.60 is: 556,640.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,703.44 : 926,912.04 = 403,379.60 : x
  2. Step 2: Convert to fraction form
    671,703.44/926,912.04 = 403,379.60/x
  3. Step 3: Cross multiply
    671,703.44x = 926,912.04 × 403,379.60
  4. Step 4: Simplify right side
    671,703.44x = 373,897,407,930.38
  5. Step 5: Solve for x
    x = 373,897,407,930.38/671,703.44
  6. Step 6: Final answer
    x = 556,640.60

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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.