Home / 515,108,130.49-711,034,121.09-306,263,774.91

Finding the Fourth Proportional to 515,108,130.49, 711,034,121.09 and 306,263,774.91

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Solution

The fourth proportional to 515,108,130.49, 711,034,121.09 and 306,263,774.91 is: 422,753,944.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,108,130.49 : 711,034,121.09 = 306,263,774.91 : x
  2. Step 2: Convert to fraction form
    515,108,130.49/711,034,121.09 = 306,263,774.91/x
  3. Step 3: Cross multiply
    515,108,130.49x = 711,034,121.09 × 306,263,774.91
  4. Step 4: Simplify right side
    515,108,130.49x = 217,763,994,013,306,144
  5. Step 5: Solve for x
    x = 217,763,994,013,306,144/515,108,130.49
  6. Step 6: Final answer
    x = 422,753,944.51

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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.