Home / 278,756,580.72-418,107,625.56-84,669,681.36

Finding the Fourth Proportional to 278,756,580.72, 418,107,625.56 and 84,669,681.36

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Solution

The fourth proportional to 278,756,580.72, 418,107,625.56 and 84,669,681.36 is: 126,996,246.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,756,580.72 : 418,107,625.56 = 84,669,681.36 : x
  2. Step 2: Convert to fraction form
    278,756,580.72/418,107,625.56 = 84,669,681.36/x
  3. Step 3: Cross multiply
    278,756,580.72x = 418,107,625.56 × 84,669,681.36
  4. Step 4: Simplify right side
    278,756,580.72x = 35,401,039,430,351,392
  5. Step 5: Solve for x
    x = 35,401,039,430,351,392/278,756,580.72
  6. Step 6: Final answer
    x = 126,996,246.47

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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.