Home / 765,412,645.78-1,147,186,223.68-396,744,347.70

Finding the Fourth Proportional to 765,412,645.78, 1,147,186,223.68 and 396,744,347.70

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Solution

The fourth proportional to 765,412,645.78, 1,147,186,223.68 and 396,744,347.70 is: 594,633,042.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,412,645.78 : 1,147,186,223.68 = 396,744,347.70 : x
  2. Step 2: Convert to fraction form
    765,412,645.78/1,147,186,223.68 = 396,744,347.70/x
  3. Step 3: Cross multiply
    765,412,645.78x = 1,147,186,223.68 × 396,744,347.70
  4. Step 4: Simplify right side
    765,412,645.78x = 455,139,650,004,347,904
  5. Step 5: Solve for x
    x = 455,139,650,004,347,904/765,412,645.78
  6. Step 6: Final answer
    x = 594,633,042.08

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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.