Home / 1,185,984.66-1,636,656.66-642,120.36

Finding the Fourth Proportional to 1,185,984.66, 1,636,656.66 and 642,120.36

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Solution

The fourth proportional to 1,185,984.66, 1,636,656.66 and 642,120.36 is: 886,124.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,984.66 : 1,636,656.66 = 642,120.36 : x
  2. Step 2: Convert to fraction form
    1,185,984.66/1,636,656.66 = 642,120.36/x
  3. Step 3: Cross multiply
    1,185,984.66x = 1,636,656.66 × 642,120.36
  4. Step 4: Simplify right side
    1,185,984.66x = 1,050,930,563,715.60
  5. Step 5: Solve for x
    x = 1,050,930,563,715.60/1,185,984.66
  6. Step 6: Final answer
    x = 886,124.92

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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.