Home / 1,187,107.86-1,638,173.25-677,710.74

Finding the Fourth Proportional to 1,187,107.86, 1,638,173.25 and 677,710.74

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Solution

The fourth proportional to 1,187,107.86, 1,638,173.25 and 677,710.74 is: 935,220.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,107.86 : 1,638,173.25 = 677,710.74 : x
  2. Step 2: Convert to fraction form
    1,187,107.86/1,638,173.25 = 677,710.74/x
  3. Step 3: Cross multiply
    1,187,107.86x = 1,638,173.25 × 677,710.74
  4. Step 4: Simplify right side
    1,187,107.86x = 1,110,207,605,505.71
  5. Step 5: Solve for x
    x = 1,110,207,605,505.71/1,187,107.86
  6. Step 6: Final answer
    x = 935,220.50

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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.