Home / 1,186,063.47-1,636,760.70-642,188.03

Finding the Fourth Proportional to 1,186,063.47, 1,636,760.70 and 642,188.03

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Solution

The fourth proportional to 1,186,063.47, 1,636,760.70 and 642,188.03 is: 886,215.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,063.47 : 1,636,760.70 = 642,188.03 : x
  2. Step 2: Convert to fraction form
    1,186,063.47/1,636,760.70 = 642,188.03/x
  3. Step 3: Cross multiply
    1,186,063.47x = 1,636,760.70 × 642,188.03
  4. Step 4: Simplify right side
    1,186,063.47x = 1,051,108,121,330.62
  5. Step 5: Solve for x
    x = 1,051,108,121,330.62/1,186,063.47
  6. Step 6: Final answer
    x = 886,215.74

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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.