Home / 1,185,938.20-1,636,574.94-642,069.57

Finding the Fourth Proportional to 1,185,938.20, 1,636,574.94 and 642,069.57

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Solution

The fourth proportional to 1,185,938.20, 1,636,574.94 and 642,069.57 is: 886,045.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,938.20 : 1,636,574.94 = 642,069.57 : x
  2. Step 2: Convert to fraction form
    1,185,938.20/1,636,574.94 = 642,069.57/x
  3. Step 3: Cross multiply
    1,185,938.20x = 1,636,574.94 × 642,069.57
  4. Step 4: Simplify right side
    1,185,938.20x = 1,050,794,967,998.58
  5. Step 5: Solve for x
    x = 1,050,794,967,998.58/1,185,938.20
  6. Step 6: Final answer
    x = 886,045.30

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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.