Home / 1,210,311.40-1,670,163.62-666,343.91

Finding the Fourth Proportional to 1,210,311.40, 1,670,163.62 and 666,343.91

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Solution

The fourth proportional to 1,210,311.40, 1,670,163.62 and 666,343.91 is: 919,518.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,311.40 : 1,670,163.62 = 666,343.91 : x
  2. Step 2: Convert to fraction form
    1,210,311.40/1,670,163.62 = 666,343.91/x
  3. Step 3: Cross multiply
    1,210,311.40x = 1,670,163.62 × 666,343.91
  4. Step 4: Simplify right side
    1,210,311.40x = 1,112,903,356,890.55
  5. Step 5: Solve for x
    x = 1,112,903,356,890.55/1,210,311.40
  6. Step 6: Final answer
    x = 919,518.20

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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.