Home / 786,294,108.76-1,085,478,705.66-489,032,169.88

Finding the Fourth Proportional to 786,294,108.76, 1,085,478,705.66 and 489,032,169.88

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Solution

The fourth proportional to 786,294,108.76, 1,085,478,705.66 and 489,032,169.88 is: 675,108,716.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,294,108.76 : 1,085,478,705.66 = 489,032,169.88 : x
  2. Step 2: Convert to fraction form
    786,294,108.76/1,085,478,705.66 = 489,032,169.88/x
  3. Step 3: Cross multiply
    786,294,108.76x = 1,085,478,705.66 × 489,032,169.88
  4. Step 4: Simplify right side
    786,294,108.76x = 530,834,006,787,443,648
  5. Step 5: Solve for x
    x = 530,834,006,787,443,648/786,294,108.76
  6. Step 6: Final answer
    x = 675,108,716.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.