Home / 386,145,999.60-579,218,999.40-354,401,257.20

Finding the Fourth Proportional to 386,145,999.60, 579,218,999.40 and 354,401,257.20

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Solution

The fourth proportional to 386,145,999.60, 579,218,999.40 and 354,401,257.20 is: 531,601,885.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,145,999.60 : 579,218,999.40 = 354,401,257.20 : x
  2. Step 2: Convert to fraction form
    386,145,999.60/579,218,999.40 = 354,401,257.20/x
  3. Step 3: Cross multiply
    386,145,999.60x = 579,218,999.40 × 354,401,257.20
  4. Step 4: Simplify right side
    386,145,999.60x = 205,275,941,581,486,016
  5. Step 5: Solve for x
    x = 205,275,941,581,486,016/386,145,999.60
  6. Step 6: Final answer
    x = 531,601,885.80

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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.