Home / 727,905.78-1,091,119.95-278,511.30

Finding the Fourth Proportional to 727,905.78, 1,091,119.95 and 278,511.30

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Solution

The fourth proportional to 727,905.78, 1,091,119.95 and 278,511.30 is: 417,484.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,905.78 : 1,091,119.95 = 278,511.30 : x
  2. Step 2: Convert to fraction form
    727,905.78/1,091,119.95 = 278,511.30/x
  3. Step 3: Cross multiply
    727,905.78x = 1,091,119.95 × 278,511.30
  4. Step 4: Simplify right side
    727,905.78x = 303,889,235,730.44
  5. Step 5: Solve for x
    x = 303,889,235,730.44/727,905.78
  6. Step 6: Final answer
    x = 417,484.30

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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.