Home / 1,078,178.51-1,488,364.61-696,391.49

Finding the Fourth Proportional to 1,078,178.51, 1,488,364.61 and 696,391.49

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Solution

The fourth proportional to 1,078,178.51, 1,488,364.61 and 696,391.49 is: 961,329.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,178.51 : 1,488,364.61 = 696,391.49 : x
  2. Step 2: Convert to fraction form
    1,078,178.51/1,488,364.61 = 696,391.49/x
  3. Step 3: Cross multiply
    1,078,178.51x = 1,488,364.61 × 696,391.49
  4. Step 4: Simplify right side
    1,078,178.51x = 1,036,484,448,660.12
  5. Step 5: Solve for x
    x = 1,036,484,448,660.12/1,078,178.51
  6. Step 6: Final answer
    x = 961,329.16

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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.