Home / 775,807,198.15-1,070,636,609.78-423,405,805.81

Finding the Fourth Proportional to 775,807,198.15, 1,070,636,609.78 and 423,405,805.81

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Solution

The fourth proportional to 775,807,198.15, 1,070,636,609.78 and 423,405,805.81 is: 584,312,387.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,807,198.15 : 1,070,636,609.78 = 423,405,805.81 : x
  2. Step 2: Convert to fraction form
    775,807,198.15/1,070,636,609.78 = 423,405,805.81/x
  3. Step 3: Cross multiply
    775,807,198.15x = 1,070,636,609.78 × 423,405,805.81
  4. Step 4: Simplify right side
    775,807,198.15x = 453,313,756,493,587,392
  5. Step 5: Solve for x
    x = 453,313,756,493,587,392/775,807,198.15
  6. Step 6: Final answer
    x = 584,312,387.89

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.