Home / 709,850,409.47-979,575,518.22-396,586,976.18

Finding the Fourth Proportional to 709,850,409.47, 979,575,518.22 and 396,586,976.18

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Solution

The fourth proportional to 709,850,409.47, 979,575,518.22 and 396,586,976.18 is: 547,279,944.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,850,409.47 : 979,575,518.22 = 396,586,976.18 : x
  2. Step 2: Convert to fraction form
    709,850,409.47/979,575,518.22 = 396,586,976.18/x
  3. Step 3: Cross multiply
    709,850,409.47x = 979,575,518.22 × 396,586,976.18
  4. Step 4: Simplify right side
    709,850,409.47x = 388,486,892,704,441,216
  5. Step 5: Solve for x
    x = 388,486,892,704,441,216/709,850,409.47
  6. Step 6: Final answer
    x = 547,279,944.51

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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.