Home / 499,181.12-689,191.76-445,372.84

Finding the Fourth Proportional to 499,181.12, 689,191.76 and 445,372.84

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Solution

The fourth proportional to 499,181.12, 689,191.76 and 445,372.84 is: 614,901.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,181.12 : 689,191.76 = 445,372.84 : x
  2. Step 2: Convert to fraction form
    499,181.12/689,191.76 = 445,372.84/x
  3. Step 3: Cross multiply
    499,181.12x = 689,191.76 × 445,372.84
  4. Step 4: Simplify right side
    499,181.12x = 306,947,291,455.80
  5. Step 5: Solve for x
    x = 306,947,291,455.80/499,181.12
  6. Step 6: Final answer
    x = 614,901.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.