Home / 1,187,027.83-1,638,099.04-643,164.05

Finding the Fourth Proportional to 1,187,027.83, 1,638,099.04 and 643,164.05

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Solution

The fourth proportional to 1,187,027.83, 1,638,099.04 and 643,164.05 is: 887,566.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,027.83 : 1,638,099.04 = 643,164.05 : x
  2. Step 2: Convert to fraction form
    1,187,027.83/1,638,099.04 = 643,164.05/x
  3. Step 3: Cross multiply
    1,187,027.83x = 1,638,099.04 × 643,164.05
  4. Step 4: Simplify right side
    1,187,027.83x = 1,053,566,415,354.85
  5. Step 5: Solve for x
    x = 1,053,566,415,354.85/1,187,027.83
  6. Step 6: Final answer
    x = 887,566.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.