Home / 685,054,134.84-945,374,705.28-371,788,348.80

Finding the Fourth Proportional to 685,054,134.84, 945,374,705.28 and 371,788,348.80

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Solution

The fourth proportional to 685,054,134.84, 945,374,705.28 and 371,788,348.80 is: 513,067,920.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,054,134.84 : 945,374,705.28 = 371,788,348.80 : x
  2. Step 2: Convert to fraction form
    685,054,134.84/945,374,705.28 = 371,788,348.80/x
  3. Step 3: Cross multiply
    685,054,134.84x = 945,374,705.28 × 371,788,348.80
  4. Step 4: Simplify right side
    685,054,134.84x = 351,479,300,673,337,856
  5. Step 5: Solve for x
    x = 351,479,300,673,337,856/685,054,134.84
  6. Step 6: Final answer
    x = 513,067,920.91

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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.