Home / 5,378,170.72-7,421,780.40-2,930,803.68

Finding the Fourth Proportional to 5,378,170.72, 7,421,780.40 and 2,930,803.68

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Solution

The fourth proportional to 5,378,170.72, 7,421,780.40 and 2,930,803.68 is: 4,044,457.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378,170.72 : 7,421,780.40 = 2,930,803.68 : x
  2. Step 2: Convert to fraction form
    5,378,170.72/7,421,780.40 = 2,930,803.68/x
  3. Step 3: Cross multiply
    5,378,170.72x = 7,421,780.40 × 2,930,803.68
  4. Step 4: Simplify right side
    5,378,170.72x = 21,751,781,308,471.88
  5. Step 5: Solve for x
    x = 21,751,781,308,471.88/5,378,170.72
  6. Step 6: Final answer
    x = 4,044,457.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.