Home / 1,210,634.55-1,670,655.11-666,821.21

Finding the Fourth Proportional to 1,210,634.55, 1,670,655.11 and 666,821.21

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Solution

The fourth proportional to 1,210,634.55, 1,670,655.11 and 666,821.21 is: 920,201.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,634.55 : 1,670,655.11 = 666,821.21 : x
  2. Step 2: Convert to fraction form
    1,210,634.55/1,670,655.11 = 666,821.21/x
  3. Step 3: Cross multiply
    1,210,634.55x = 1,670,655.11 × 666,821.21
  4. Step 4: Simplify right side
    1,210,634.55x = 1,114,028,250,255.50
  5. Step 5: Solve for x
    x = 1,114,028,250,255.50/1,210,634.55
  6. Step 6: Final answer
    x = 920,201.93

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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.