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Finding the Fourth Proportional to 578,558.40, 867,837.60 and 263,630.40

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Solution

The fourth proportional to 578,558.40, 867,837.60 and 263,630.40 is: 395,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,558.40 : 867,837.60 = 263,630.40 : x
  2. Step 2: Convert to fraction form
    578,558.40/867,837.60 = 263,630.40/x
  3. Step 3: Cross multiply
    578,558.40x = 867,837.60 × 263,630.40
  4. Step 4: Simplify right side
    578,558.40x = 228,788,373,623.04
  5. Step 5: Solve for x
    x = 228,788,373,623.04/578,558.40
  6. Step 6: Final answer
    x = 395,445.60

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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.