Home / 1,312,101.64-1,968,774.54-780,672.52

Finding the Fourth Proportional to 1,312,101.64, 1,968,774.54 and 780,672.52

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Solution

The fourth proportional to 1,312,101.64, 1,968,774.54 and 780,672.52 is: 1,171,378.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,101.64 : 1,968,774.54 = 780,672.52 : x
  2. Step 2: Convert to fraction form
    1,312,101.64/1,968,774.54 = 780,672.52/x
  3. Step 3: Cross multiply
    1,312,101.64x = 1,968,774.54 × 780,672.52
  4. Step 4: Simplify right side
    1,312,101.64x = 1,536,968,181,453.64
  5. Step 5: Solve for x
    x = 1,536,968,181,453.64/1,312,101.64
  6. Step 6: Final answer
    x = 1,171,378.90

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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.