Home / 515,387,920.34-772,982,105.81-200,253,408.81

Finding the Fourth Proportional to 515,387,920.34, 772,982,105.81 and 200,253,408.81

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Solution

The fourth proportional to 515,387,920.34, 772,982,105.81 and 200,253,408.81 is: 300,341,345.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,387,920.34 : 772,982,105.81 = 200,253,408.81 : x
  2. Step 2: Convert to fraction form
    515,387,920.34/772,982,105.81 = 200,253,408.81/x
  3. Step 3: Cross multiply
    515,387,920.34x = 772,982,105.81 × 200,253,408.81
  4. Step 4: Simplify right side
    515,387,920.34x = 154,792,301,636,583,328
  5. Step 5: Solve for x
    x = 154,792,301,636,583,328/515,387,920.34
  6. Step 6: Final answer
    x = 300,341,345.87

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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.