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Finding the Fourth Proportional to 423,941.96, 635,322.26 and 318,638.12

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Solution

The fourth proportional to 423,941.96, 635,322.26 and 318,638.12 is: 477,513.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,941.96 : 635,322.26 = 318,638.12 : x
  2. Step 2: Convert to fraction form
    423,941.96/635,322.26 = 318,638.12/x
  3. Step 3: Cross multiply
    423,941.96x = 635,322.26 × 318,638.12
  4. Step 4: Simplify right side
    423,941.96x = 202,437,890,520.55
  5. Step 5: Solve for x
    x = 202,437,890,520.55/423,941.96
  6. Step 6: Final answer
    x = 477,513.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.