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Finding the Fourth Proportional to 940,656.78, 1,417,260.74 and 850,803.20

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Solution

The fourth proportional to 940,656.78, 1,417,260.74 and 850,803.20 is: 1,281,880.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    940,656.78 : 1,417,260.74 = 850,803.20 : x
  2. Step 2: Convert to fraction form
    940,656.78/1,417,260.74 = 850,803.20/x
  3. Step 3: Cross multiply
    940,656.78x = 1,417,260.74 × 850,803.20
  4. Step 4: Simplify right side
    940,656.78x = 1,205,809,961,486.05
  5. Step 5: Solve for x
    x = 1,205,809,961,486.05/940,656.78
  6. Step 6: Final answer
    x = 1,281,880.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.