Home / 1,210,644.76-1,670,765.60-666,780.43

Finding the Fourth Proportional to 1,210,644.76, 1,670,765.60 and 666,780.43

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Solution

The fourth proportional to 1,210,644.76, 1,670,765.60 and 666,780.43 is: 920,198.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,644.76 : 1,670,765.60 = 666,780.43 : x
  2. Step 2: Convert to fraction form
    1,210,644.76/1,670,765.60 = 666,780.43/x
  3. Step 3: Cross multiply
    1,210,644.76x = 1,670,765.60 × 666,780.43
  4. Step 4: Simplify right side
    1,210,644.76x = 1,114,033,805,197.21
  5. Step 5: Solve for x
    x = 1,114,033,805,197.21/1,210,644.76
  6. Step 6: Final answer
    x = 920,198.76

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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.