Home / 1,187,186.42-1,638,397.63-670,761.20

Finding the Fourth Proportional to 1,187,186.42, 1,638,397.63 and 670,761.20

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Solution

The fourth proportional to 1,187,186.42, 1,638,397.63 and 670,761.20 is: 925,695.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,186.42 : 1,638,397.63 = 670,761.20 : x
  2. Step 2: Convert to fraction form
    1,187,186.42/1,638,397.63 = 670,761.20/x
  3. Step 3: Cross multiply
    1,187,186.42x = 1,638,397.63 × 670,761.20
  4. Step 4: Simplify right side
    1,187,186.42x = 1,098,973,565,310.40
  5. Step 5: Solve for x
    x = 1,098,973,565,310.40/1,187,186.42
  6. Step 6: Final answer
    x = 925,695.87

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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.