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Finding the Fourth Proportional to 664,567.40, 996,851.10 and 310,273.40

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Solution

The fourth proportional to 664,567.40, 996,851.10 and 310,273.40 is: 465,410.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,567.40 : 996,851.10 = 310,273.40 : x
  2. Step 2: Convert to fraction form
    664,567.40/996,851.10 = 310,273.40/x
  3. Step 3: Cross multiply
    664,567.40x = 996,851.10 × 310,273.40
  4. Step 4: Simplify right side
    664,567.40x = 309,296,380,090.74
  5. Step 5: Solve for x
    x = 309,296,380,090.74/664,567.40
  6. Step 6: Final answer
    x = 465,410.10

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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.