Home / 664,460.20-996,981.90-309,291.40

Finding the Fourth Proportional to 664,460.20, 996,981.90 and 309,291.40

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Solution

The fourth proportional to 664,460.20, 996,981.90 and 309,291.40 is: 464,072.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,460.20 : 996,981.90 = 309,291.40 : x
  2. Step 2: Convert to fraction form
    664,460.20/996,981.90 = 309,291.40/x
  3. Step 3: Cross multiply
    664,460.20x = 996,981.90 × 309,291.40
  4. Step 4: Simplify right side
    664,460.20x = 308,357,927,625.66
  5. Step 5: Solve for x
    x = 308,357,927,625.66/664,460.20
  6. Step 6: Final answer
    x = 464,072.83

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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.