Home / 1,185,984.41-1,636,656.10-642,120.64

Finding the Fourth Proportional to 1,185,984.41, 1,636,656.10 and 642,120.64

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Solution

The fourth proportional to 1,185,984.41, 1,636,656.10 and 642,120.64 is: 886,125.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,984.41 : 1,636,656.10 = 642,120.64 : x
  2. Step 2: Convert to fraction form
    1,185,984.41/1,636,656.10 = 642,120.64/x
  3. Step 3: Cross multiply
    1,185,984.41x = 1,636,656.10 × 642,120.64
  4. Step 4: Simplify right side
    1,185,984.41x = 1,050,930,656,694.96
  5. Step 5: Solve for x
    x = 1,050,930,656,694.96/1,185,984.41
  6. Step 6: Final answer
    x = 886,125.19

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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.