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Finding the Fourth Proportional to 392,964,708.60, 589,447,062.90 and 392,964,708.60

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Solution

The fourth proportional to 392,964,708.60, 589,447,062.90 and 392,964,708.60 is: 589,447,062.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,964,708.60 : 589,447,062.90 = 392,964,708.60 : x
  2. Step 2: Convert to fraction form
    392,964,708.60/589,447,062.90 = 392,964,708.60/x
  3. Step 3: Cross multiply
    392,964,708.60x = 589,447,062.90 × 392,964,708.60
  4. Step 4: Simplify right side
    392,964,708.60x = 231,631,893,307,624,384
  5. Step 5: Solve for x
    x = 231,631,893,307,624,384/392,964,708.60
  6. Step 6: Final answer
    x = 589,447,062.90

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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.