Home / 4,752,002.20-7,128,003.30-2,620,989.40

Finding the Fourth Proportional to 4,752,002.20, 7,128,003.30 and 2,620,989.40

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Solution

The fourth proportional to 4,752,002.20, 7,128,003.30 and 2,620,989.40 is: 3,931,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,752,002.20 : 7,128,003.30 = 2,620,989.40 : x
  2. Step 2: Convert to fraction form
    4,752,002.20/7,128,003.30 = 2,620,989.40/x
  3. Step 3: Cross multiply
    4,752,002.20x = 7,128,003.30 × 2,620,989.40
  4. Step 4: Simplify right side
    4,752,002.20x = 18,682,421,092,465.02
  5. Step 5: Solve for x
    x = 18,682,421,092,465.02/4,752,002.20
  6. Step 6: Final answer
    x = 3,931,484.10

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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.