Home / 7,443,039.20-11,164,558.80-7,128,111.20

Finding the Fourth Proportional to 7,443,039.20, 11,164,558.80 and 7,128,111.20

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Solution

The fourth proportional to 7,443,039.20, 11,164,558.80 and 7,128,111.20 is: 10,692,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,443,039.20 : 11,164,558.80 = 7,128,111.20 : x
  2. Step 2: Convert to fraction form
    7,443,039.20/11,164,558.80 = 7,128,111.20/x
  3. Step 3: Cross multiply
    7,443,039.20x = 11,164,558.80 × 7,128,111.20
  4. Step 4: Simplify right side
    7,443,039.20x = 79,582,216,625,338.56
  5. Step 5: Solve for x
    x = 79,582,216,625,338.56/7,443,039.20
  6. Step 6: Final answer
    x = 10,692,166.80

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Similar ratio
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1.5x scale

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.