Home / 855,561,281.25-1,283,190,220.92-389,113,448.85

Finding the Fourth Proportional to 855,561,281.25, 1,283,190,220.92 and 389,113,448.85

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Solution

The fourth proportional to 855,561,281.25, 1,283,190,220.92 and 389,113,448.85 is: 583,601,178.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,561,281.25 : 1,283,190,220.92 = 389,113,448.85 : x
  2. Step 2: Convert to fraction form
    855,561,281.25/1,283,190,220.92 = 389,113,448.85/x
  3. Step 3: Cross multiply
    855,561,281.25x = 1,283,190,220.92 × 389,113,448.85
  4. Step 4: Simplify right side
    855,561,281.25x = 499,306,572,392,774,656
  5. Step 5: Solve for x
    x = 499,306,572,392,774,656/855,561,281.25
  6. Step 6: Final answer
    x = 583,601,178.94

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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.