Home / 1,188,005.40-1,780,695.90-655,908.30

Finding the Fourth Proportional to 1,188,005.40, 1,780,695.90 and 655,908.30

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Solution

The fourth proportional to 1,188,005.40, 1,780,695.90 and 655,908.30 is: 983,137.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,005.40 : 1,780,695.90 = 655,908.30 : x
  2. Step 2: Convert to fraction form
    1,188,005.40/1,780,695.90 = 655,908.30/x
  3. Step 3: Cross multiply
    1,188,005.40x = 1,780,695.90 × 655,908.30
  4. Step 4: Simplify right side
    1,188,005.40x = 1,167,973,220,585.97
  5. Step 5: Solve for x
    x = 1,167,973,220,585.97/1,188,005.40
  6. Step 6: Final answer
    x = 983,137.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.