Home / 664,870.20-997,629.30-309,701.40

Finding the Fourth Proportional to 664,870.20, 997,629.30 and 309,701.40

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Solution

The fourth proportional to 664,870.20, 997,629.30 and 309,701.40 is: 464,703.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,870.20 : 997,629.30 = 309,701.40 : x
  2. Step 2: Convert to fraction form
    664,870.20/997,629.30 = 309,701.40/x
  3. Step 3: Cross multiply
    664,870.20x = 997,629.30 × 309,701.40
  4. Step 4: Simplify right side
    664,870.20x = 308,967,190,891.02
  5. Step 5: Solve for x
    x = 308,967,190,891.02/664,870.20
  6. Step 6: Final answer
    x = 464,703.02

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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.