Home / 1,187,984.30-1,781,976.45-1,118,000.30

Finding the Fourth Proportional to 1,187,984.30, 1,781,976.45 and 1,118,000.30

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Solution

The fourth proportional to 1,187,984.30, 1,781,976.45 and 1,118,000.30 is: 1,677,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,984.30 : 1,781,976.45 = 1,118,000.30 : x
  2. Step 2: Convert to fraction form
    1,187,984.30/1,781,976.45 = 1,118,000.30/x
  3. Step 3: Cross multiply
    1,187,984.30x = 1,781,976.45 × 1,118,000.30
  4. Step 4: Simplify right side
    1,187,984.30x = 1,992,250,205,692.94
  5. Step 5: Solve for x
    x = 1,992,250,205,692.94/1,187,984.30
  6. Step 6: Final answer
    x = 1,677,000.45

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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.