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Finding the Fourth Proportional to 356,615,999.70, 534,923,999.55 and 275,894,898.90

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Solution

The fourth proportional to 356,615,999.70, 534,923,999.55 and 275,894,898.90 is: 413,842,348.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,615,999.70 : 534,923,999.55 = 275,894,898.90 : x
  2. Step 2: Convert to fraction form
    356,615,999.70/534,923,999.55 = 275,894,898.90/x
  3. Step 3: Cross multiply
    356,615,999.70x = 534,923,999.55 × 275,894,898.90
  4. Step 4: Simplify right side
    356,615,999.70x = 147,582,802,775,030,880
  5. Step 5: Solve for x
    x = 147,582,802,775,030,880/356,615,999.70
  6. Step 6: Final answer
    x = 413,842,348.35

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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.