Home / 1,280,600.12-1,921,232.28-681,068.30

Finding the Fourth Proportional to 1,280,600.12, 1,921,232.28 and 681,068.30

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Solution

The fourth proportional to 1,280,600.12, 1,921,232.28 and 681,068.30 is: 1,021,779.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,600.12 : 1,921,232.28 = 681,068.30 : x
  2. Step 2: Convert to fraction form
    1,280,600.12/1,921,232.28 = 681,068.30/x
  3. Step 3: Cross multiply
    1,280,600.12x = 1,921,232.28 × 681,068.30
  4. Step 4: Simplify right side
    1,280,600.12x = 1,308,490,393,238.56
  5. Step 5: Solve for x
    x = 1,308,490,393,238.56/1,280,600.12
  6. Step 6: Final answer
    x = 1,021,779.07

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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.