Home / 1,238,602.16-1,857,457.40-428,766.60

Finding the Fourth Proportional to 1,238,602.16, 1,857,457.40 and 428,766.60

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Solution

The fourth proportional to 1,238,602.16, 1,857,457.40 and 428,766.60 is: 642,995.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,602.16 : 1,857,457.40 = 428,766.60 : x
  2. Step 2: Convert to fraction form
    1,238,602.16/1,857,457.40 = 428,766.60/x
  3. Step 3: Cross multiply
    1,238,602.16x = 1,857,457.40 × 428,766.60
  4. Step 4: Simplify right side
    1,238,602.16x = 796,415,694,042.84
  5. Step 5: Solve for x
    x = 796,415,694,042.84/1,238,602.16
  6. Step 6: Final answer
    x = 642,995.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.