Home / 279,985,503.60-391,072,712.40-279,985,503.60

Finding the Fourth Proportional to 279,985,503.60, 391,072,712.40 and 279,985,503.60

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Solution

The fourth proportional to 279,985,503.60, 391,072,712.40 and 279,985,503.60 is: 391,072,712.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,985,503.60 : 391,072,712.40 = 279,985,503.60 : x
  2. Step 2: Convert to fraction form
    279,985,503.60/391,072,712.40 = 279,985,503.60/x
  3. Step 3: Cross multiply
    279,985,503.60x = 391,072,712.40 × 279,985,503.60
  4. Step 4: Simplify right side
    279,985,503.60x = 109,494,690,325,531,968
  5. Step 5: Solve for x
    x = 109,494,690,325,531,968/279,985,503.60
  6. Step 6: Final answer
    x = 391,072,712.40

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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.