Home / 279,936,019.60-391,003,434.80-279,936,019.60

Finding the Fourth Proportional to 279,936,019.60, 391,003,434.80 and 279,936,019.60

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Solution

The fourth proportional to 279,936,019.60, 391,003,434.80 and 279,936,019.60 is: 391,003,434.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,019.60 : 391,003,434.80 = 279,936,019.60 : x
  2. Step 2: Convert to fraction form
    279,936,019.60/391,003,434.80 = 279,936,019.60/x
  3. Step 3: Cross multiply
    279,936,019.60x = 391,003,434.80 × 279,936,019.60
  4. Step 4: Simplify right side
    279,936,019.60x = 109,455,945,187,840,128
  5. Step 5: Solve for x
    x = 109,455,945,187,840,128/279,936,019.60
  6. Step 6: Final answer
    x = 391,003,434.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.