Home / 1,187,587.24-1,638,692.10-678,181.80

Finding the Fourth Proportional to 1,187,587.24, 1,638,692.10 and 678,181.80

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Solution

The fourth proportional to 1,187,587.24, 1,638,692.10 and 678,181.80 is: 935,789.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,587.24 : 1,638,692.10 = 678,181.80 : x
  2. Step 2: Convert to fraction form
    1,187,587.24/1,638,692.10 = 678,181.80/x
  3. Step 3: Cross multiply
    1,187,587.24x = 1,638,692.10 × 678,181.80
  4. Step 4: Simplify right side
    1,187,587.24x = 1,111,331,158,023.78
  5. Step 5: Solve for x
    x = 1,111,331,158,023.78/1,187,587.24
  6. Step 6: Final answer
    x = 935,789.07

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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.