Home / 393,405,965.20-590,108,947.80-278,520,230.80

Finding the Fourth Proportional to 393,405,965.20, 590,108,947.80 and 278,520,230.80

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Solution

The fourth proportional to 393,405,965.20, 590,108,947.80 and 278,520,230.80 is: 417,780,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,405,965.20 : 590,108,947.80 = 278,520,230.80 : x
  2. Step 2: Convert to fraction form
    393,405,965.20/590,108,947.80 = 278,520,230.80/x
  3. Step 3: Cross multiply
    393,405,965.20x = 590,108,947.80 × 278,520,230.80
  4. Step 4: Simplify right side
    393,405,965.20x = 164,357,280,338,401,152
  5. Step 5: Solve for x
    x = 164,357,280,338,401,152/393,405,965.20
  6. Step 6: Final answer
    x = 417,780,346.20

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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.