Home / 491,132.96-677,702.86-309,776.39

Finding the Fourth Proportional to 491,132.96, 677,702.86 and 309,776.39

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Solution

The fourth proportional to 491,132.96, 677,702.86 and 309,776.39 is: 427,453.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,132.96 : 677,702.86 = 309,776.39 : x
  2. Step 2: Convert to fraction form
    491,132.96/677,702.86 = 309,776.39/x
  3. Step 3: Cross multiply
    491,132.96x = 677,702.86 × 309,776.39
  4. Step 4: Simplify right side
    491,132.96x = 209,936,341,300.52
  5. Step 5: Solve for x
    x = 209,936,341,300.52/491,132.96
  6. Step 6: Final answer
    x = 427,453.18

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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.