Home / 408,068,458.80-612,102,688.20-392,196,087.60

Finding the Fourth Proportional to 408,068,458.80, 612,102,688.20 and 392,196,087.60

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Solution

The fourth proportional to 408,068,458.80, 612,102,688.20 and 392,196,087.60 is: 588,294,131.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,068,458.80 : 612,102,688.20 = 392,196,087.60 : x
  2. Step 2: Convert to fraction form
    408,068,458.80/612,102,688.20 = 392,196,087.60/x
  3. Step 3: Cross multiply
    408,068,458.80x = 612,102,688.20 × 392,196,087.60
  4. Step 4: Simplify right side
    408,068,458.80x = 240,064,279,521,482,720
  5. Step 5: Solve for x
    x = 240,064,279,521,482,720/408,068,458.80
  6. Step 6: Final answer
    x = 588,294,131.40

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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.