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Finding the Fourth Proportional to 402,409,339.80, 603,614,009.70 and 264,659,832.60

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Solution

The fourth proportional to 402,409,339.80, 603,614,009.70 and 264,659,832.60 is: 396,989,748.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,409,339.80 : 603,614,009.70 = 264,659,832.60 : x
  2. Step 2: Convert to fraction form
    402,409,339.80/603,614,009.70 = 264,659,832.60/x
  3. Step 3: Cross multiply
    402,409,339.80x = 603,614,009.70 × 264,659,832.60
  4. Step 4: Simplify right side
    402,409,339.80x = 159,752,382,762,216,800
  5. Step 5: Solve for x
    x = 159,752,382,762,216,800/402,409,339.80
  6. Step 6: Final answer
    x = 396,989,748.90

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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.