Home / 1,647,218,409.60-2,470,825,631.52-420,386,992.32

Finding the Fourth Proportional to 1,647,218,409.60, 2,470,825,631.52 and 420,386,992.32

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Solution

The fourth proportional to 1,647,218,409.60, 2,470,825,631.52 and 420,386,992.32 is: 630,579,982.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647,218,409.60 : 2,470,825,631.52 = 420,386,992.32 : x
  2. Step 2: Convert to fraction form
    1,647,218,409.60/2,470,825,631.52 = 420,386,992.32/x
  3. Step 3: Cross multiply
    1,647,218,409.60x = 2,470,825,631.52 × 420,386,992.32
  4. Step 4: Simplify right side
    1,647,218,409.60x = 1,038,702,955,781,857,408
  5. Step 5: Solve for x
    x = 1,038,702,955,781,857,408/1,647,218,409.60
  6. Step 6: Final answer
    x = 630,579,982.43

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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.