Home / 439,981,424.60-659,216,309.70-209,454,128.60

Finding the Fourth Proportional to 439,981,424.60, 659,216,309.70 and 209,454,128.60

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Solution

The fourth proportional to 439,981,424.60, 659,216,309.70 and 209,454,128.60 is: 313,821,379.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,981,424.60 : 659,216,309.70 = 209,454,128.60 : x
  2. Step 2: Convert to fraction form
    439,981,424.60/659,216,309.70 = 209,454,128.60/x
  3. Step 3: Cross multiply
    439,981,424.60x = 659,216,309.70 × 209,454,128.60
  4. Step 4: Simplify right side
    439,981,424.60x = 138,075,577,707,121,232
  5. Step 5: Solve for x
    x = 138,075,577,707,121,232/439,981,424.60
  6. Step 6: Final answer
    x = 313,821,379.69

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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.