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Finding the Fourth Proportional to 384,775,303.80, 577,162,955.70 and 345,808,212.60

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Solution

The fourth proportional to 384,775,303.80, 577,162,955.70 and 345,808,212.60 is: 518,712,318.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,775,303.80 : 577,162,955.70 = 345,808,212.60 : x
  2. Step 2: Convert to fraction form
    384,775,303.80/577,162,955.70 = 345,808,212.60/x
  3. Step 3: Cross multiply
    384,775,303.80x = 577,162,955.70 × 345,808,212.60
  4. Step 4: Simplify right side
    384,775,303.80x = 199,587,690,089,550,016
  5. Step 5: Solve for x
    x = 199,587,690,089,550,016/384,775,303.80
  6. Step 6: Final answer
    x = 518,712,318.90

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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.