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Finding the Fourth Proportional to 486,447.72, 671,481.72 and 382,813.08

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Solution

The fourth proportional to 486,447.72, 671,481.72 and 382,813.08 is: 528,426.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,447.72 : 671,481.72 = 382,813.08 : x
  2. Step 2: Convert to fraction form
    486,447.72/671,481.72 = 382,813.08/x
  3. Step 3: Cross multiply
    486,447.72x = 671,481.72 × 382,813.08
  4. Step 4: Simplify right side
    486,447.72x = 257,051,985,396.90
  5. Step 5: Solve for x
    x = 257,051,985,396.90/486,447.72
  6. Step 6: Final answer
    x = 528,426.75

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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.