Home / 1,918,540.28-2,878,094.74-638,729.76

Finding the Fourth Proportional to 1,918,540.28, 2,878,094.74 and 638,729.76

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Solution

The fourth proportional to 1,918,540.28, 2,878,094.74 and 638,729.76 is: 958,189.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,540.28 : 2,878,094.74 = 638,729.76 : x
  2. Step 2: Convert to fraction form
    1,918,540.28/2,878,094.74 = 638,729.76/x
  3. Step 3: Cross multiply
    1,918,540.28x = 2,878,094.74 × 638,729.76
  4. Step 4: Simplify right side
    1,918,540.28x = 1,838,324,762,537.46
  5. Step 5: Solve for x
    x = 1,838,324,762,537.46/1,918,540.28
  6. Step 6: Final answer
    x = 958,189.30

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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.