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Finding the Fourth Proportional to 374,456.40, 561,684.60 and 351,128.40

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Solution

The fourth proportional to 374,456.40, 561,684.60 and 351,128.40 is: 526,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,456.40 : 561,684.60 = 351,128.40 : x
  2. Step 2: Convert to fraction form
    374,456.40/561,684.60 = 351,128.40/x
  3. Step 3: Cross multiply
    374,456.40x = 561,684.60 × 351,128.40
  4. Step 4: Simplify right side
    374,456.40x = 197,223,414,902.64
  5. Step 5: Solve for x
    x = 197,223,414,902.64/374,456.40
  6. Step 6: Final answer
    x = 526,692.60

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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.