Home / 1,918,878.04-2,878,119.82-639,347.32

Finding the Fourth Proportional to 1,918,878.04, 2,878,119.82 and 639,347.32

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Solution

The fourth proportional to 1,918,878.04, 2,878,119.82 and 639,347.32 is: 958,955.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,878.04 : 2,878,119.82 = 639,347.32 : x
  2. Step 2: Convert to fraction form
    1,918,878.04/2,878,119.82 = 639,347.32/x
  3. Step 3: Cross multiply
    1,918,878.04x = 2,878,119.82 × 639,347.32
  4. Step 4: Simplify right side
    1,918,878.04x = 1,840,118,190,359.15
  5. Step 5: Solve for x
    x = 1,840,118,190,359.15/1,918,878.04
  6. Step 6: Final answer
    x = 958,955.26

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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.