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Finding the Fourth Proportional to 664,609.04, 917,176.20 and 362,805.20

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Solution

The fourth proportional to 664,609.04, 917,176.20 and 362,805.20 is: 500,679.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,609.04 : 917,176.20 = 362,805.20 : x
  2. Step 2: Convert to fraction form
    664,609.04/917,176.20 = 362,805.20/x
  3. Step 3: Cross multiply
    664,609.04x = 917,176.20 × 362,805.20
  4. Step 4: Simplify right side
    664,609.04x = 332,756,294,676.24
  5. Step 5: Solve for x
    x = 332,756,294,676.24/664,609.04
  6. Step 6: Final answer
    x = 500,679.76

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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.