Home / 1,385,888.52-1,912,513.60-765,692.78

Finding the Fourth Proportional to 1,385,888.52, 1,912,513.60 and 765,692.78

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Solution

The fourth proportional to 1,385,888.52, 1,912,513.60 and 765,692.78 is: 1,056,649.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,888.52 : 1,912,513.60 = 765,692.78 : x
  2. Step 2: Convert to fraction form
    1,385,888.52/1,912,513.60 = 765,692.78/x
  3. Step 3: Cross multiply
    1,385,888.52x = 1,912,513.60 × 765,692.78
  4. Step 4: Simplify right side
    1,385,888.52x = 1,464,397,855,171.81
  5. Step 5: Solve for x
    x = 1,464,397,855,171.81/1,385,888.52
  6. Step 6: Final answer
    x = 1,056,649.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.