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Finding the Fourth Proportional to 700,728.60, 967,005.23 and 378,438.77

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Solution

The fourth proportional to 700,728.60, 967,005.23 and 378,438.77 is: 522,245.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,728.60 : 967,005.23 = 378,438.77 : x
  2. Step 2: Convert to fraction form
    700,728.60/967,005.23 = 378,438.77/x
  3. Step 3: Cross multiply
    700,728.60x = 967,005.23 × 378,438.77
  4. Step 4: Simplify right side
    700,728.60x = 365,952,263,097.55
  5. Step 5: Solve for x
    x = 365,952,263,097.55/700,728.60
  6. Step 6: Final answer
    x = 522,245.36

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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.