Home / 485,823.99-669,928.41-418,070.73

Finding the Fourth Proportional to 485,823.99, 669,928.41 and 418,070.73

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Solution

The fourth proportional to 485,823.99, 669,928.41 and 418,070.73 is: 576,499.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,823.99 : 669,928.41 = 418,070.73 : x
  2. Step 2: Convert to fraction form
    485,823.99/669,928.41 = 418,070.73/x
  3. Step 3: Cross multiply
    485,823.99x = 669,928.41 × 418,070.73
  4. Step 4: Simplify right side
    485,823.99x = 280,077,459,416.44
  5. Step 5: Solve for x
    x = 280,077,459,416.44/485,823.99
  6. Step 6: Final answer
    x = 576,499.85

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1.5x scale

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.