Home / 1,186,186.58-1,636,940.85-642,328.82

Finding the Fourth Proportional to 1,186,186.58, 1,636,940.85 and 642,328.82

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Solution

The fourth proportional to 1,186,186.58, 1,636,940.85 and 642,328.82 is: 886,415.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,186.58 : 1,636,940.85 = 642,328.82 : x
  2. Step 2: Convert to fraction form
    1,186,186.58/1,636,940.85 = 642,328.82/x
  3. Step 3: Cross multiply
    1,186,186.58x = 1,636,940.85 × 642,328.82
  4. Step 4: Simplify right side
    1,186,186.58x = 1,051,454,284,590.30
  5. Step 5: Solve for x
    x = 1,051,454,284,590.30/1,186,186.58
  6. Step 6: Final answer
    x = 886,415.60

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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.