Home / 1,187,016.12-1,638,162.60-670,590.90

Finding the Fourth Proportional to 1,187,016.12, 1,638,162.60 and 670,590.90

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Solution

The fourth proportional to 1,187,016.12, 1,638,162.60 and 670,590.90 is: 925,460.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,016.12 : 1,638,162.60 = 670,590.90 : x
  2. Step 2: Convert to fraction form
    1,187,016.12/1,638,162.60 = 670,590.90/x
  3. Step 3: Cross multiply
    1,187,016.12x = 1,638,162.60 × 670,590.90
  4. Step 4: Simplify right side
    1,187,016.12x = 1,098,536,932,280.34
  5. Step 5: Solve for x
    x = 1,098,536,932,280.34/1,187,016.12
  6. Step 6: Final answer
    x = 925,460.84

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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.