Home / 1,186,069.20-1,636,776.42-642,205.44

Finding the Fourth Proportional to 1,186,069.20, 1,636,776.42 and 642,205.44

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Solution

The fourth proportional to 1,186,069.20, 1,636,776.42 and 642,205.44 is: 886,244.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,069.20 : 1,636,776.42 = 642,205.44 : x
  2. Step 2: Convert to fraction form
    1,186,069.20/1,636,776.42 = 642,205.44/x
  3. Step 3: Cross multiply
    1,186,069.20x = 1,636,776.42 × 642,205.44
  4. Step 4: Simplify right side
    1,186,069.20x = 1,051,146,720,987.72
  5. Step 5: Solve for x
    x = 1,051,146,720,987.72/1,186,069.20
  6. Step 6: Final answer
    x = 886,244.01

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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.