Home / 1,211,287.96-1,671,569.08-667,411.17

Finding the Fourth Proportional to 1,211,287.96, 1,671,569.08 and 667,411.17

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Solution

The fourth proportional to 1,211,287.96, 1,671,569.08 and 667,411.17 is: 921,022.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,287.96 : 1,671,569.08 = 667,411.17 : x
  2. Step 2: Convert to fraction form
    1,211,287.96/1,671,569.08 = 667,411.17/x
  3. Step 3: Cross multiply
    1,211,287.96x = 1,671,569.08 × 667,411.17
  4. Step 4: Simplify right side
    1,211,287.96x = 1,115,623,875,418.62
  5. Step 5: Solve for x
    x = 1,115,623,875,418.62/1,211,287.96
  6. Step 6: Final answer
    x = 921,022.84

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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.