Home / 665,260.20-997,890.30-310,310.10

Finding the Fourth Proportional to 665,260.20, 997,890.30 and 310,310.10

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Solution

The fourth proportional to 665,260.20, 997,890.30 and 310,310.10 is: 465,465.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,260.20 : 997,890.30 = 310,310.10 : x
  2. Step 2: Convert to fraction form
    665,260.20/997,890.30 = 310,310.10/x
  3. Step 3: Cross multiply
    665,260.20x = 997,890.30 × 310,310.10
  4. Step 4: Simplify right side
    665,260.20x = 309,655,438,782.03
  5. Step 5: Solve for x
    x = 309,655,438,782.03/665,260.20
  6. Step 6: Final answer
    x = 465,465.15

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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.