Home / 521,746,405.46-782,747,730.80-259,554,667.22

Finding the Fourth Proportional to 521,746,405.46, 782,747,730.80 and 259,554,667.22

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Solution

The fourth proportional to 521,746,405.46, 782,747,730.80 and 259,554,667.22 is: 389,395,738.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,746,405.46 : 782,747,730.80 = 259,554,667.22 : x
  2. Step 2: Convert to fraction form
    521,746,405.46/782,747,730.80 = 259,554,667.22/x
  3. Step 3: Cross multiply
    521,746,405.46x = 782,747,730.80 × 259,554,667.22
  4. Step 4: Simplify right side
    521,746,405.46x = 203,165,826,783,706,368
  5. Step 5: Solve for x
    x = 203,165,826,783,706,368/521,746,405.46
  6. Step 6: Final answer
    x = 389,395,738.35

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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.