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Finding the Fourth Proportional to 386,468,652.95, 579,702,979.43 and 264,024,646.55

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Solution

The fourth proportional to 386,468,652.95, 579,702,979.43 and 264,024,646.55 is: 396,036,969.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,468,652.95 : 579,702,979.43 = 264,024,646.55 : x
  2. Step 2: Convert to fraction form
    386,468,652.95/579,702,979.43 = 264,024,646.55/x
  3. Step 3: Cross multiply
    386,468,652.95x = 579,702,979.43 × 264,024,646.55
  4. Step 4: Simplify right side
    386,468,652.95x = 153,055,874,247,987,648
  5. Step 5: Solve for x
    x = 153,055,874,247,987,648/386,468,652.95
  6. Step 6: Final answer
    x = 396,036,969.83

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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.