Home / 872,890,461.29-1,309,508,176.53-320,198,021.43

Finding the Fourth Proportional to 872,890,461.29, 1,309,508,176.53 and 320,198,021.43

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Solution

The fourth proportional to 872,890,461.29, 1,309,508,176.53 and 320,198,021.43 is: 480,360,303.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,890,461.29 : 1,309,508,176.53 = 320,198,021.43 : x
  2. Step 2: Convert to fraction form
    872,890,461.29/1,309,508,176.53 = 320,198,021.43/x
  3. Step 3: Cross multiply
    872,890,461.29x = 1,309,508,176.53 × 320,198,021.43
  4. Step 4: Simplify right side
    872,890,461.29x = 419,301,927,171,313,152
  5. Step 5: Solve for x
    x = 419,301,927,171,313,152/872,890,461.29
  6. Step 6: Final answer
    x = 480,360,303.80

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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.