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Finding the Fourth Proportional to 623,520.08, 860,425.44 and 351,580.40

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Solution

The fourth proportional to 623,520.08, 860,425.44 and 351,580.40 is: 485,162.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,520.08 : 860,425.44 = 351,580.40 : x
  2. Step 2: Convert to fraction form
    623,520.08/860,425.44 = 351,580.40/x
  3. Step 3: Cross multiply
    623,520.08x = 860,425.44 × 351,580.40
  4. Step 4: Simplify right side
    623,520.08x = 302,508,720,365.38
  5. Step 5: Solve for x
    x = 302,508,720,365.38/623,520.08
  6. Step 6: Final answer
    x = 485,162.76

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