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Finding the Fourth Proportional to 669,421.44, 923,807.54 and 367,617.60

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Solution

The fourth proportional to 669,421.44, 923,807.54 and 367,617.60 is: 507,315.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,421.44 : 923,807.54 = 367,617.60 : x
  2. Step 2: Convert to fraction form
    669,421.44/923,807.54 = 367,617.60/x
  3. Step 3: Cross multiply
    669,421.44x = 923,807.54 × 367,617.60
  4. Step 4: Simplify right side
    669,421.44x = 339,607,910,716.70
  5. Step 5: Solve for x
    x = 339,607,910,716.70/669,421.44
  6. Step 6: Final answer
    x = 507,315.56

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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.