Home / 1,210,311.90-1,670,164.31-666,344.40

Finding the Fourth Proportional to 1,210,311.90, 1,670,164.31 and 666,344.40

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Solution

The fourth proportional to 1,210,311.90, 1,670,164.31 and 666,344.40 is: 919,518.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,311.90 : 1,670,164.31 = 666,344.40 : x
  2. Step 2: Convert to fraction form
    1,210,311.90/1,670,164.31 = 666,344.40/x
  3. Step 3: Cross multiply
    1,210,311.90x = 1,670,164.31 × 666,344.40
  4. Step 4: Simplify right side
    1,210,311.90x = 1,112,904,631,716.64
  5. Step 5: Solve for x
    x = 1,112,904,631,716.64/1,210,311.90
  6. Step 6: Final answer
    x = 919,518.87

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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.