Home / 668,861,042.40-1,004,047,390.80-396,385,336.80

Finding the Fourth Proportional to 668,861,042.40, 1,004,047,390.80 and 396,385,336.80

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Solution

The fourth proportional to 668,861,042.40, 1,004,047,390.80 and 396,385,336.80 is: 595,025,929.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,861,042.40 : 1,004,047,390.80 = 396,385,336.80 : x
  2. Step 2: Convert to fraction form
    668,861,042.40/1,004,047,390.80 = 396,385,336.80/x
  3. Step 3: Cross multiply
    668,861,042.40x = 1,004,047,390.80 × 396,385,336.80
  4. Step 4: Simplify right side
    668,861,042.40x = 397,989,663,165,419,200
  5. Step 5: Solve for x
    x = 397,989,663,165,419,200/668,861,042.40
  6. Step 6: Final answer
    x = 595,025,929.06

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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.