Home / 1,211,411.78-1,671,821.43-667,546.64

Finding the Fourth Proportional to 1,211,411.78, 1,671,821.43 and 667,546.64

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Solution

The fourth proportional to 1,211,411.78, 1,671,821.43 and 667,546.64 is: 921,254.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,411.78 : 1,671,821.43 = 667,546.64 : x
  2. Step 2: Convert to fraction form
    1,211,411.78/1,671,821.43 = 667,546.64/x
  3. Step 3: Cross multiply
    1,211,411.78x = 1,671,821.43 × 667,546.64
  4. Step 4: Simplify right side
    1,211,411.78x = 1,116,018,778,276.50
  5. Step 5: Solve for x
    x = 1,116,018,778,276.50/1,211,411.78
  6. Step 6: Final answer
    x = 921,254.69

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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.