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Finding the Fourth Proportional to 669,158.52, 923,319.64 and 378,768.64

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Solution

The fourth proportional to 669,158.52, 923,319.64 and 378,768.64 is: 522,633.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,158.52 : 923,319.64 = 378,768.64 : x
  2. Step 2: Convert to fraction form
    669,158.52/923,319.64 = 378,768.64/x
  3. Step 3: Cross multiply
    669,158.52x = 923,319.64 × 378,768.64
  4. Step 4: Simplify right side
    669,158.52x = 349,724,524,328.09
  5. Step 5: Solve for x
    x = 349,724,524,328.09/669,158.52
  6. Step 6: Final answer
    x = 522,633.30

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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.