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Finding the Fourth Proportional to 667,242,998.87, 920,795,323.80 and 369,884,487.54

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Solution

The fourth proportional to 667,242,998.87, 920,795,323.80 and 369,884,487.54 is: 510,440,584.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,242,998.87 : 920,795,323.80 = 369,884,487.54 : x
  2. Step 2: Convert to fraction form
    667,242,998.87/920,795,323.80 = 369,884,487.54/x
  3. Step 3: Cross multiply
    667,242,998.87x = 920,795,323.80 × 369,884,487.54
  4. Step 4: Simplify right side
    667,242,998.87x = 340,587,906,472,991,360
  5. Step 5: Solve for x
    x = 340,587,906,472,991,360/667,242,998.87
  6. Step 6: Final answer
    x = 510,440,584.69

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1.5x scale

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.