Home / 1,205,877.20-1,664,143.56-776,987.60

Finding the Fourth Proportional to 1,205,877.20, 1,664,143.56 and 776,987.60

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Solution

The fourth proportional to 1,205,877.20, 1,664,143.56 and 776,987.60 is: 1,072,264.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,877.20 : 1,664,143.56 = 776,987.60 : x
  2. Step 2: Convert to fraction form
    1,205,877.20/1,664,143.56 = 776,987.60/x
  3. Step 3: Cross multiply
    1,205,877.20x = 1,664,143.56 × 776,987.60
  4. Step 4: Simplify right side
    1,205,877.20x = 1,293,018,910,739.86
  5. Step 5: Solve for x
    x = 1,293,018,910,739.86/1,205,877.20
  6. Step 6: Final answer
    x = 1,072,264.17

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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.