Home / 1,276,779.96-1,915,449.84-378,292.32

Finding the Fourth Proportional to 1,276,779.96, 1,915,449.84 and 378,292.32

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Solution

The fourth proportional to 1,276,779.96, 1,915,449.84 and 378,292.32 is: 567,521.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,779.96 : 1,915,449.84 = 378,292.32 : x
  2. Step 2: Convert to fraction form
    1,276,779.96/1,915,449.84 = 378,292.32/x
  3. Step 3: Cross multiply
    1,276,779.96x = 1,915,449.84 × 378,292.32
  4. Step 4: Simplify right side
    1,276,779.96x = 724,599,963,817.23
  5. Step 5: Solve for x
    x = 724,599,963,817.23/1,276,779.96
  6. Step 6: Final answer
    x = 567,521.41

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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.