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Finding the Fourth Proportional to 664,577.90, 996,866.85 and 310,283.90

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Solution

The fourth proportional to 664,577.90, 996,866.85 and 310,283.90 is: 465,425.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,577.90 : 996,866.85 = 310,283.90 : x
  2. Step 2: Convert to fraction form
    664,577.90/996,866.85 = 310,283.90/x
  3. Step 3: Cross multiply
    664,577.90x = 996,866.85 × 310,283.90
  4. Step 4: Simplify right side
    664,577.90x = 309,311,733,998.72
  5. Step 5: Solve for x
    x = 309,311,733,998.72/664,577.90
  6. Step 6: Final answer
    x = 465,425.85

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Double scale
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Similar ratio
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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.