Home / 1,187,602.46-1,638,912.40-643,756.32

Finding the Fourth Proportional to 1,187,602.46, 1,638,912.40 and 643,756.32

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Solution

The fourth proportional to 1,187,602.46, 1,638,912.40 and 643,756.32 is: 888,395.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,602.46 : 1,638,912.40 = 643,756.32 : x
  2. Step 2: Convert to fraction form
    1,187,602.46/1,638,912.40 = 643,756.32/x
  3. Step 3: Cross multiply
    1,187,602.46x = 1,638,912.40 × 643,756.32
  4. Step 4: Simplify right side
    1,187,602.46x = 1,055,060,215,426.37
  5. Step 5: Solve for x
    x = 1,055,060,215,426.37/1,187,602.46
  6. Step 6: Final answer
    x = 888,395.11

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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.