Home / 1,265,401,836.80-1,898,109,061.05-518,825,402.89

Finding the Fourth Proportional to 1,265,401,836.80, 1,898,109,061.05 and 518,825,402.89

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Solution

The fourth proportional to 1,265,401,836.80, 1,898,109,061.05 and 518,825,402.89 is: 778,240,689.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,401,836.80 : 1,898,109,061.05 = 518,825,402.89 : x
  2. Step 2: Convert to fraction form
    1,265,401,836.80/1,898,109,061.05 = 518,825,402.89/x
  3. Step 3: Cross multiply
    1,265,401,836.80x = 1,898,109,061.05 × 518,825,402.89
  4. Step 4: Simplify right side
    1,265,401,836.80x = 984,787,198,322,746,624
  5. Step 5: Solve for x
    x = 984,787,198,322,746,624/1,265,401,836.80
  6. Step 6: Final answer
    x = 778,240,689.78

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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.