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Finding the Fourth Proportional to 408,773,017.45, 612,428,794.80 and 248,764,989.70

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Solution

The fourth proportional to 408,773,017.45, 612,428,794.80 and 248,764,989.70 is: 372,702,786.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,773,017.45 : 612,428,794.80 = 248,764,989.70 : x
  2. Step 2: Convert to fraction form
    408,773,017.45/612,428,794.80 = 248,764,989.70/x
  3. Step 3: Cross multiply
    408,773,017.45x = 612,428,794.80 × 248,764,989.70
  4. Step 4: Simplify right side
    408,773,017.45x = 152,350,842,830,405,408
  5. Step 5: Solve for x
    x = 152,350,842,830,405,408/408,773,017.45
  6. Step 6: Final answer
    x = 372,702,786.94

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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.