Home / 1,187,247,125.14-1,781,144,275.25-410,892,782.78

Finding the Fourth Proportional to 1,187,247,125.14, 1,781,144,275.25 and 410,892,782.78

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Solution

The fourth proportional to 1,187,247,125.14, 1,781,144,275.25 and 410,892,782.78 is: 616,433,859.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,247,125.14 : 1,781,144,275.25 = 410,892,782.78 : x
  2. Step 2: Convert to fraction form
    1,187,247,125.14/1,781,144,275.25 = 410,892,782.78/x
  3. Step 3: Cross multiply
    1,187,247,125.14x = 1,781,144,275.25 × 410,892,782.78
  4. Step 4: Simplify right side
    1,187,247,125.14x = 731,859,327,783,307,904
  5. Step 5: Solve for x
    x = 731,859,327,783,307,904/1,187,247,125.14
  6. Step 6: Final answer
    x = 616,433,859.71

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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.