Home / 1,186,054.85-1,636,748.79-642,179.40

Finding the Fourth Proportional to 1,186,054.85, 1,636,748.79 and 642,179.40

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Solution

The fourth proportional to 1,186,054.85, 1,636,748.79 and 642,179.40 is: 886,203.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,054.85 : 1,636,748.79 = 642,179.40 : x
  2. Step 2: Convert to fraction form
    1,186,054.85/1,636,748.79 = 642,179.40/x
  3. Step 3: Cross multiply
    1,186,054.85x = 1,636,748.79 × 642,179.40
  4. Step 4: Simplify right side
    1,186,054.85x = 1,051,086,355,912.93
  5. Step 5: Solve for x
    x = 1,051,086,355,912.93/1,186,054.85
  6. Step 6: Final answer
    x = 886,203.84

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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.