Home / 1,918,783.66-2,878,135.56-639,483.82

Finding the Fourth Proportional to 1,918,783.66, 2,878,135.56 and 639,483.82

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Solution

The fourth proportional to 1,918,783.66, 2,878,135.56 and 639,483.82 is: 959,212.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,783.66 : 2,878,135.56 = 639,483.82 : x
  2. Step 2: Convert to fraction form
    1,918,783.66/2,878,135.56 = 639,483.82/x
  3. Step 3: Cross multiply
    1,918,783.66x = 2,878,135.56 × 639,483.82
  4. Step 4: Simplify right side
    1,918,783.66x = 1,840,521,122,386.64
  5. Step 5: Solve for x
    x = 1,840,521,122,386.64/1,918,783.66
  6. Step 6: Final answer
    x = 959,212.42

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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.