Home / 1,098,117.30-1,643,968.35-783,189.30

Finding the Fourth Proportional to 1,098,117.30, 1,643,968.35 and 783,189.30

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Solution

The fourth proportional to 1,098,117.30, 1,643,968.35 and 783,189.30 is: 1,172,496.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,117.30 : 1,643,968.35 = 783,189.30 : x
  2. Step 2: Convert to fraction form
    1,098,117.30/1,643,968.35 = 783,189.30/x
  3. Step 3: Cross multiply
    1,098,117.30x = 1,643,968.35 × 783,189.30
  4. Step 4: Simplify right side
    1,098,117.30x = 1,287,538,421,258.66
  5. Step 5: Solve for x
    x = 1,287,538,421,258.66/1,098,117.30
  6. Step 6: Final answer
    x = 1,172,496.25

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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.