Home / 628,123,220.82-941,748,520.56-278,178,595.20

Finding the Fourth Proportional to 628,123,220.82, 941,748,520.56 and 278,178,595.20

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Solution

The fourth proportional to 628,123,220.82, 941,748,520.56 and 278,178,595.20 is: 417,074,662.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,123,220.82 : 941,748,520.56 = 278,178,595.20 : x
  2. Step 2: Convert to fraction form
    628,123,220.82/941,748,520.56 = 278,178,595.20/x
  3. Step 3: Cross multiply
    628,123,220.82x = 941,748,520.56 × 278,178,595.20
  4. Step 4: Simplify right side
    628,123,220.82x = 261,974,280,481,059,104
  5. Step 5: Solve for x
    x = 261,974,280,481,059,104/628,123,220.82
  6. Step 6: Final answer
    x = 417,074,662.74

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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.