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Finding the Fourth Proportional to 490,763.16, 677,277.18 and 275,970.60

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Solution

The fourth proportional to 490,763.16, 677,277.18 and 275,970.60 is: 380,852.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,763.16 : 677,277.18 = 275,970.60 : x
  2. Step 2: Convert to fraction form
    490,763.16/677,277.18 = 275,970.60/x
  3. Step 3: Cross multiply
    490,763.16x = 677,277.18 × 275,970.60
  4. Step 4: Simplify right side
    490,763.16x = 186,908,589,730.91
  5. Step 5: Solve for x
    x = 186,908,589,730.91/490,763.16
  6. Step 6: Final answer
    x = 380,852.93

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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.