Home / 1,186,176.06-1,636,930.86-642,311.85

Finding the Fourth Proportional to 1,186,176.06, 1,636,930.86 and 642,311.85

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Solution

The fourth proportional to 1,186,176.06, 1,636,930.86 and 642,311.85 is: 886,394.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,176.06 : 1,636,930.86 = 642,311.85 : x
  2. Step 2: Convert to fraction form
    1,186,176.06/1,636,930.86 = 642,311.85/x
  3. Step 3: Cross multiply
    1,186,176.06x = 1,636,930.86 × 642,311.85
  4. Step 4: Simplify right side
    1,186,176.06x = 1,051,420,089,008.69
  5. Step 5: Solve for x
    x = 1,051,420,089,008.69/1,186,176.06
  6. Step 6: Final answer
    x = 886,394.63

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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.