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Finding the Fourth Proportional to 386,468,627.20, 579,702,940.80 and 264,024,620.80

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Solution

The fourth proportional to 386,468,627.20, 579,702,940.80 and 264,024,620.80 is: 396,036,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,468,627.20 : 579,702,940.80 = 264,024,620.80 : x
  2. Step 2: Convert to fraction form
    386,468,627.20/579,702,940.80 = 264,024,620.80/x
  3. Step 3: Cross multiply
    386,468,627.20x = 579,702,940.80 × 264,024,620.80
  4. Step 4: Simplify right side
    386,468,627.20x = 153,055,849,121,364,832
  5. Step 5: Solve for x
    x = 153,055,849,121,364,832/386,468,627.20
  6. Step 6: Final answer
    x = 396,036,931.20

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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.