Home / 1,186,194.41-1,636,956.05-642,330.21

Finding the Fourth Proportional to 1,186,194.41, 1,636,956.05 and 642,330.21

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Solution

The fourth proportional to 1,186,194.41, 1,636,956.05 and 642,330.21 is: 886,419.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,194.41 : 1,636,956.05 = 642,330.21 : x
  2. Step 2: Convert to fraction form
    1,186,194.41/1,636,956.05 = 642,330.21/x
  3. Step 3: Cross multiply
    1,186,194.41x = 1,636,956.05 × 642,330.21
  4. Step 4: Simplify right side
    1,186,194.41x = 1,051,466,320,145.62
  5. Step 5: Solve for x
    x = 1,051,466,320,145.62/1,186,194.41
  6. Step 6: Final answer
    x = 886,419.90

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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.