Home / 542,535,912.11-812,777,022.35-320,543,378.15

Finding the Fourth Proportional to 542,535,912.11, 812,777,022.35 and 320,543,378.15

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Solution

The fourth proportional to 542,535,912.11, 812,777,022.35 and 320,543,378.15 is: 480,208,381.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,535,912.11 : 812,777,022.35 = 320,543,378.15 : x
  2. Step 2: Convert to fraction form
    542,535,912.11/812,777,022.35 = 320,543,378.15/x
  3. Step 3: Cross multiply
    542,535,912.11x = 812,777,022.35 × 320,543,378.15
  4. Step 4: Simplify right side
    542,535,912.11x = 260,530,292,421,100,448
  5. Step 5: Solve for x
    x = 260,530,292,421,100,448/542,535,912.11
  6. Step 6: Final answer
    x = 480,208,381.80

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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.