Home / 1,187,688.06-1,639,011.71-643,822.17

Finding the Fourth Proportional to 1,187,688.06, 1,639,011.71 and 643,822.17

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Solution

The fourth proportional to 1,187,688.06, 1,639,011.71 and 643,822.17 is: 888,475.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,688.06 : 1,639,011.71 = 643,822.17 : x
  2. Step 2: Convert to fraction form
    1,187,688.06/1,639,011.71 = 643,822.17/x
  3. Step 3: Cross multiply
    1,187,688.06x = 1,639,011.71 × 643,822.17
  4. Step 4: Simplify right side
    1,187,688.06x = 1,055,232,075,787.61
  5. Step 5: Solve for x
    x = 1,055,232,075,787.61/1,187,688.06
  6. Step 6: Final answer
    x = 888,475.78

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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.