Home / 1,215,834,655.69-1,823,781,841.49-342,430,114.78

Finding the Fourth Proportional to 1,215,834,655.69, 1,823,781,841.49 and 342,430,114.78

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Solution

The fourth proportional to 1,215,834,655.69, 1,823,781,841.49 and 342,430,114.78 is: 513,653,581.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,834,655.69 : 1,823,781,841.49 = 342,430,114.78 : x
  2. Step 2: Convert to fraction form
    1,215,834,655.69/1,823,781,841.49 = 342,430,114.78/x
  3. Step 3: Cross multiply
    1,215,834,655.69x = 1,823,781,841.49 × 342,430,114.78
  4. Step 4: Simplify right side
    1,215,834,655.69x = 624,517,825,315,100,416
  5. Step 5: Solve for x
    x = 624,517,825,315,100,416/1,215,834,655.69
  6. Step 6: Final answer
    x = 513,653,581.42

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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.