Home / 808,978.20-1,213,930.95-329,117.46

Finding the Fourth Proportional to 808,978.20, 1,213,930.95 and 329,117.46

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Solution

The fourth proportional to 808,978.20, 1,213,930.95 and 329,117.46 is: 493,864.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,978.20 : 1,213,930.95 = 329,117.46 : x
  2. Step 2: Convert to fraction form
    808,978.20/1,213,930.95 = 329,117.46/x
  3. Step 3: Cross multiply
    808,978.20x = 1,213,930.95 × 329,117.46
  4. Step 4: Simplify right side
    808,978.20x = 399,525,870,879.39
  5. Step 5: Solve for x
    x = 399,525,870,879.39/808,978.20
  6. Step 6: Final answer
    x = 493,864.82

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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.