Home / 478,789.58-718,355.85-205,120.95

Finding the Fourth Proportional to 478,789.58, 718,355.85 and 205,120.95

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Solution

The fourth proportional to 478,789.58, 718,355.85 and 205,120.95 is: 307,754.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,789.58 : 718,355.85 = 205,120.95 : x
  2. Step 2: Convert to fraction form
    478,789.58/718,355.85 = 205,120.95/x
  3. Step 3: Cross multiply
    478,789.58x = 718,355.85 × 205,120.95
  4. Step 4: Simplify right side
    478,789.58x = 147,349,834,390.06
  5. Step 5: Solve for x
    x = 147,349,834,390.06/478,789.58
  6. Step 6: Final answer
    x = 307,754.89

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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.