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Finding the Fourth Proportional to 667,018.45, 920,484.40 and 361,094.75

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Solution

The fourth proportional to 667,018.45, 920,484.40 and 361,094.75 is: 498,310.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,018.45 : 920,484.40 = 361,094.75 : x
  2. Step 2: Convert to fraction form
    667,018.45/920,484.40 = 361,094.75/x
  3. Step 3: Cross multiply
    667,018.45x = 920,484.40 × 361,094.75
  4. Step 4: Simplify right side
    667,018.45x = 332,382,084,296.90
  5. Step 5: Solve for x
    x = 332,382,084,296.90/667,018.45
  6. Step 6: Final answer
    x = 498,310.18

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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.