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Finding the Fourth Proportional to 511,650.40, 767,475.60 and 290,466.40

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Solution

The fourth proportional to 511,650.40, 767,475.60 and 290,466.40 is: 435,699.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,650.40 : 767,475.60 = 290,466.40 : x
  2. Step 2: Convert to fraction form
    511,650.40/767,475.60 = 290,466.40/x
  3. Step 3: Cross multiply
    511,650.40x = 767,475.60 × 290,466.40
  4. Step 4: Simplify right side
    511,650.40x = 222,925,874,619.84
  5. Step 5: Solve for x
    x = 222,925,874,619.84/511,650.40
  6. Step 6: Final answer
    x = 435,699.60

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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.