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Finding the Fourth Proportional to 669,419.44, 923,804.78 and 367,615.60

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Solution

The fourth proportional to 669,419.44, 923,804.78 and 367,615.60 is: 507,312.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,419.44 : 923,804.78 = 367,615.60 : x
  2. Step 2: Convert to fraction form
    669,419.44/923,804.78 = 367,615.60/x
  3. Step 3: Cross multiply
    669,419.44x = 923,804.78 × 367,615.60
  4. Step 4: Simplify right side
    669,419.44x = 339,605,048,482.57
  5. Step 5: Solve for x
    x = 339,605,048,482.57/669,419.44
  6. Step 6: Final answer
    x = 507,312.80

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Double scale
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Similar ratio
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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.