Home / 668,861,009.40-1,004,047,341.30-396,385,303.80

Finding the Fourth Proportional to 668,861,009.40, 1,004,047,341.30 and 396,385,303.80

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Solution

The fourth proportional to 668,861,009.40, 1,004,047,341.30 and 396,385,303.80 is: 595,025,879.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,861,009.40 : 1,004,047,341.30 = 396,385,303.80 : x
  2. Step 2: Convert to fraction form
    668,861,009.40/1,004,047,341.30 = 396,385,303.80/x
  3. Step 3: Cross multiply
    668,861,009.40x = 1,004,047,341.30 × 396,385,303.80
  4. Step 4: Simplify right side
    668,861,009.40x = 397,989,610,410,782,784
  5. Step 5: Solve for x
    x = 397,989,610,410,782,784/668,861,009.40
  6. Step 6: Final answer
    x = 595,025,879.54

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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.