Home / 1,290,692.31-1,781,530.83-860,971.38

Finding the Fourth Proportional to 1,290,692.31, 1,781,530.83 and 860,971.38

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Solution

The fourth proportional to 1,290,692.31, 1,781,530.83 and 860,971.38 is: 1,188,390.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,692.31 : 1,781,530.83 = 860,971.38 : x
  2. Step 2: Convert to fraction form
    1,290,692.31/1,781,530.83 = 860,971.38/x
  3. Step 3: Cross multiply
    1,290,692.31x = 1,781,530.83 × 860,971.38
  4. Step 4: Simplify right side
    1,290,692.31x = 1,533,847,057,217.65
  5. Step 5: Solve for x
    x = 1,533,847,057,217.65/1,290,692.31
  6. Step 6: Final answer
    x = 1,188,390.95

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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.