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Finding the Fourth Proportional to 1,662,859.76, 2,491,752 and 864,400.64

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Solution

The fourth proportional to 1,662,859.76, 2,491,752 and 864,400.64 is: 1,295,281.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,662,859.76 : 2,491,752 = 864,400.64 : x
  2. Step 2: Convert to fraction form
    1,662,859.76/2,491,752 = 864,400.64/x
  3. Step 3: Cross multiply
    1,662,859.76x = 2,491,752 × 864,400.64
  4. Step 4: Simplify right side
    1,662,859.76x = 2,153,872,023,521.28
  5. Step 5: Solve for x
    x = 2,153,872,023,521.28/1,662,859.76
  6. Step 6: Final answer
    x = 1,295,281.82

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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.