Home / 1,278,487.68-1,918,909.44-647,848.32

Finding the Fourth Proportional to 1,278,487.68, 1,918,909.44 and 647,848.32

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Solution

The fourth proportional to 1,278,487.68, 1,918,909.44 and 647,848.32 is: 972,369.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,487.68 : 1,918,909.44 = 647,848.32 : x
  2. Step 2: Convert to fraction form
    1,278,487.68/1,918,909.44 = 647,848.32/x
  3. Step 3: Cross multiply
    1,278,487.68x = 1,918,909.44 × 647,848.32
  4. Step 4: Simplify right side
    1,278,487.68x = 1,243,162,256,936.14
  5. Step 5: Solve for x
    x = 1,243,162,256,936.14/1,278,487.68
  6. Step 6: Final answer
    x = 972,369.37

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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.