Home / 521,636,701.60-782,455,052.40-279,771,997.60

Finding the Fourth Proportional to 521,636,701.60, 782,455,052.40 and 279,771,997.60

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Solution

The fourth proportional to 521,636,701.60, 782,455,052.40 and 279,771,997.60 is: 419,657,996.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,636,701.60 : 782,455,052.40 = 279,771,997.60 : x
  2. Step 2: Convert to fraction form
    521,636,701.60/782,455,052.40 = 279,771,997.60/x
  3. Step 3: Cross multiply
    521,636,701.60x = 782,455,052.40 × 279,771,997.60
  4. Step 4: Simplify right side
    521,636,701.60x = 218,909,013,042,160,672
  5. Step 5: Solve for x
    x = 218,909,013,042,160,672/521,636,701.60
  6. Step 6: Final answer
    x = 419,657,996.40

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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.