Home / 7,442,931.20-11,164,396.80-7,128,003.20

Finding the Fourth Proportional to 7,442,931.20, 11,164,396.80 and 7,128,003.20

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Solution

The fourth proportional to 7,442,931.20, 11,164,396.80 and 7,128,003.20 is: 10,692,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,442,931.20 : 11,164,396.80 = 7,128,003.20 : x
  2. Step 2: Convert to fraction form
    7,442,931.20/11,164,396.80 = 7,128,003.20/x
  3. Step 3: Cross multiply
    7,442,931.20x = 11,164,396.80 × 7,128,003.20
  4. Step 4: Simplify right side
    7,442,931.20x = 79,579,856,116,469.77
  5. Step 5: Solve for x
    x = 79,579,856,116,469.77/7,442,931.20
  6. Step 6: Final answer
    x = 10,692,004.80

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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.