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Finding the Fourth Proportional to 664,419.44, 916,886.02 and 362,615.60

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Solution

The fourth proportional to 664,419.44, 916,886.02 and 362,615.60 is: 500,402.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,419.44 : 916,886.02 = 362,615.60 : x
  2. Step 2: Convert to fraction form
    664,419.44/916,886.02 = 362,615.60/x
  3. Step 3: Cross multiply
    664,419.44x = 916,886.02 × 362,615.60
  4. Step 4: Simplify right side
    664,419.44x = 332,477,174,273.91
  5. Step 5: Solve for x
    x = 332,477,174,273.91/664,419.44
  6. Step 6: Final answer
    x = 500,402.54

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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.