Home / 1,186,140.92-1,636,867.04-642,265.20

Finding the Fourth Proportional to 1,186,140.92, 1,636,867.04 and 642,265.20

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Solution

The fourth proportional to 1,186,140.92, 1,636,867.04 and 642,265.20 is: 886,321.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,140.92 : 1,636,867.04 = 642,265.20 : x
  2. Step 2: Convert to fraction form
    1,186,140.92/1,636,867.04 = 642,265.20/x
  3. Step 3: Cross multiply
    1,186,140.92x = 1,636,867.04 × 642,265.20
  4. Step 4: Simplify right side
    1,186,140.92x = 1,051,302,733,607.68
  5. Step 5: Solve for x
    x = 1,051,302,733,607.68/1,186,140.92
  6. Step 6: Final answer
    x = 886,321.95

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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.