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Finding the Fourth Proportional to 678,535.34, 936,379.60 and 372,631.44

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Solution

The fourth proportional to 678,535.34, 936,379.60 and 372,631.44 is: 514,231.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,535.34 : 936,379.60 = 372,631.44 : x
  2. Step 2: Convert to fraction form
    678,535.34/936,379.60 = 372,631.44/x
  3. Step 3: Cross multiply
    678,535.34x = 936,379.60 × 372,631.44
  4. Step 4: Simplify right side
    678,535.34x = 348,924,478,734.62
  5. Step 5: Solve for x
    x = 348,924,478,734.62/678,535.34
  6. Step 6: Final answer
    x = 514,231.84

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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.