Home / 872,891,007.49-1,309,508,995.98-320,198,567.62

Finding the Fourth Proportional to 872,891,007.49, 1,309,508,995.98 and 320,198,567.62

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Solution

The fourth proportional to 872,891,007.49, 1,309,508,995.98 and 320,198,567.62 is: 480,361,123.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,891,007.49 : 1,309,508,995.98 = 320,198,567.62 : x
  2. Step 2: Convert to fraction form
    872,891,007.49/1,309,508,995.98 = 320,198,567.62/x
  3. Step 3: Cross multiply
    872,891,007.49x = 1,309,508,995.98 × 320,198,567.62
  4. Step 4: Simplify right side
    872,891,007.49x = 419,302,904,798,300,352
  5. Step 5: Solve for x
    x = 419,302,904,798,300,352/872,891,007.49
  6. Step 6: Final answer
    x = 480,361,123.21

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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.