Home / 775,807,206.90-1,070,636,621.86-423,405,814.56

Finding the Fourth Proportional to 775,807,206.90, 1,070,636,621.86 and 423,405,814.56

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Solution

The fourth proportional to 775,807,206.90, 1,070,636,621.86 and 423,405,814.56 is: 584,312,399.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,807,206.90 : 1,070,636,621.86 = 423,405,814.56 : x
  2. Step 2: Convert to fraction form
    775,807,206.90/1,070,636,621.86 = 423,405,814.56/x
  3. Step 3: Cross multiply
    775,807,206.90x = 1,070,636,621.86 × 423,405,814.56
  4. Step 4: Simplify right side
    775,807,206.90x = 453,313,770,976,400,000
  5. Step 5: Solve for x
    x = 453,313,770,976,400,000/775,807,206.90
  6. Step 6: Final answer
    x = 584,312,399.97

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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.