Home / 664,477.20-997,007.40-309,308.40

Finding the Fourth Proportional to 664,477.20, 997,007.40 and 309,308.40

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Solution

The fourth proportional to 664,477.20, 997,007.40 and 309,308.40 is: 464,098.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,477.20 : 997,007.40 = 309,308.40 : x
  2. Step 2: Convert to fraction form
    664,477.20/997,007.40 = 309,308.40/x
  3. Step 3: Cross multiply
    664,477.20x = 997,007.40 × 309,308.40
  4. Step 4: Simplify right side
    664,477.20x = 308,382,763,682.16
  5. Step 5: Solve for x
    x = 308,382,763,682.16/664,477.20
  6. Step 6: Final answer
    x = 464,098.34

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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.