Home / 1,312,101.77-1,968,774.73-780,672.65

Finding the Fourth Proportional to 1,312,101.77, 1,968,774.73 and 780,672.65

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Solution

The fourth proportional to 1,312,101.77, 1,968,774.73 and 780,672.65 is: 1,171,379.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,101.77 : 1,968,774.73 = 780,672.65 : x
  2. Step 2: Convert to fraction form
    1,312,101.77/1,968,774.73 = 780,672.65/x
  3. Step 3: Cross multiply
    1,312,101.77x = 1,968,774.73 × 780,672.65
  4. Step 4: Simplify right side
    1,312,101.77x = 1,536,968,573,926.58
  5. Step 5: Solve for x
    x = 1,536,968,573,926.58/1,312,101.77
  6. Step 6: Final answer
    x = 1,171,379.09

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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.