Home / 1,186,113.60-1,636,837.40-642,249.64

Finding the Fourth Proportional to 1,186,113.60, 1,636,837.40 and 642,249.64

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Solution

The fourth proportional to 1,186,113.60, 1,636,837.40 and 642,249.64 is: 886,304.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,113.60 : 1,636,837.40 = 642,249.64 : x
  2. Step 2: Convert to fraction form
    1,186,113.60/1,636,837.40 = 642,249.64/x
  3. Step 3: Cross multiply
    1,186,113.60x = 1,636,837.40 × 642,249.64
  4. Step 4: Simplify right side
    1,186,113.60x = 1,051,258,230,888.54
  5. Step 5: Solve for x
    x = 1,051,258,230,888.54/1,186,113.60
  6. Step 6: Final answer
    x = 886,304.85

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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.