Home / 765,412,643.78-1,147,186,220.68-396,744,345.71

Finding the Fourth Proportional to 765,412,643.78, 1,147,186,220.68 and 396,744,345.71

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Solution

The fourth proportional to 765,412,643.78, 1,147,186,220.68 and 396,744,345.71 is: 594,633,039.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,412,643.78 : 1,147,186,220.68 = 396,744,345.71 : x
  2. Step 2: Convert to fraction form
    765,412,643.78/1,147,186,220.68 = 396,744,345.71/x
  3. Step 3: Cross multiply
    765,412,643.78x = 1,147,186,220.68 × 396,744,345.71
  4. Step 4: Simplify right side
    765,412,643.78x = 455,139,646,530,267,904
  5. Step 5: Solve for x
    x = 455,139,646,530,267,904/765,412,643.78
  6. Step 6: Final answer
    x = 594,633,039.09

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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.