Home / 1,398,130.88-2,097,189.84-438,656.72

Finding the Fourth Proportional to 1,398,130.88, 2,097,189.84 and 438,656.72

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Solution

The fourth proportional to 1,398,130.88, 2,097,189.84 and 438,656.72 is: 657,983.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,130.88 : 2,097,189.84 = 438,656.72 : x
  2. Step 2: Convert to fraction form
    1,398,130.88/2,097,189.84 = 438,656.72/x
  3. Step 3: Cross multiply
    1,398,130.88x = 2,097,189.84 × 438,656.72
  4. Step 4: Simplify right side
    1,398,130.88x = 919,946,416,431.73
  5. Step 5: Solve for x
    x = 919,946,416,431.73/1,398,130.88
  6. Step 6: Final answer
    x = 657,983.05

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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.