Home / 1,186,343.20-1,637,133.39-642,474.57

Finding the Fourth Proportional to 1,186,343.20, 1,637,133.39 and 642,474.57

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Solution

The fourth proportional to 1,186,343.20, 1,637,133.39 and 642,474.57 is: 886,603.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,343.20 : 1,637,133.39 = 642,474.57 : x
  2. Step 2: Convert to fraction form
    1,186,343.20/1,637,133.39 = 642,474.57/x
  3. Step 3: Cross multiply
    1,186,343.20x = 1,637,133.39 × 642,474.57
  4. Step 4: Simplify right side
    1,186,343.20x = 1,051,816,570,772.89
  5. Step 5: Solve for x
    x = 1,051,816,570,772.89/1,186,343.20
  6. Step 6: Final answer
    x = 886,603.95

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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.