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Finding the Fourth Proportional to 728,714.90, 1,093,072.35 and 374,420.90

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Solution

The fourth proportional to 728,714.90, 1,093,072.35 and 374,420.90 is: 561,631.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,714.90 : 1,093,072.35 = 374,420.90 : x
  2. Step 2: Convert to fraction form
    728,714.90/1,093,072.35 = 374,420.90/x
  3. Step 3: Cross multiply
    728,714.90x = 1,093,072.35 × 374,420.90
  4. Step 4: Simplify right side
    728,714.90x = 409,269,133,052.12
  5. Step 5: Solve for x
    x = 409,269,133,052.12/728,714.90
  6. Step 6: Final answer
    x = 561,631.35

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.