Home / 1,187,427.40-1,780,968.30-345,891.40

Finding the Fourth Proportional to 1,187,427.40, 1,780,968.30 and 345,891.40

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Solution

The fourth proportional to 1,187,427.40, 1,780,968.30 and 345,891.40 is: 518,786.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,427.40 : 1,780,968.30 = 345,891.40 : x
  2. Step 2: Convert to fraction form
    1,187,427.40/1,780,968.30 = 345,891.40/x
  3. Step 3: Cross multiply
    1,187,427.40x = 1,780,968.30 × 345,891.40
  4. Step 4: Simplify right side
    1,187,427.40x = 616,021,618,642.62
  5. Step 5: Solve for x
    x = 616,021,618,642.62/1,187,427.40
  6. Step 6: Final answer
    x = 518,786.76

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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.