Home / 1,210,178.56-1,670,086.20-666,354.28

Finding the Fourth Proportional to 1,210,178.56, 1,670,086.20 and 666,354.28

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Solution

The fourth proportional to 1,210,178.56, 1,670,086.20 and 666,354.28 is: 919,590.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,178.56 : 1,670,086.20 = 666,354.28 : x
  2. Step 2: Convert to fraction form
    1,210,178.56/1,670,086.20 = 666,354.28/x
  3. Step 3: Cross multiply
    1,210,178.56x = 1,670,086.20 × 666,354.28
  4. Step 4: Simplify right side
    1,210,178.56x = 1,112,869,087,338.94
  5. Step 5: Solve for x
    x = 1,112,869,087,338.94/1,210,178.56
  6. Step 6: Final answer
    x = 919,590.81

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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.