Home / 1,398,658.51-1,930,013.36-787,022.96

Finding the Fourth Proportional to 1,398,658.51, 1,930,013.36 and 787,022.96

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Solution

The fourth proportional to 1,398,658.51, 1,930,013.36 and 787,022.96 is: 1,086,015.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,658.51 : 1,930,013.36 = 787,022.96 : x
  2. Step 2: Convert to fraction form
    1,398,658.51/1,930,013.36 = 787,022.96/x
  3. Step 3: Cross multiply
    1,398,658.51x = 1,930,013.36 × 787,022.96
  4. Step 4: Simplify right side
    1,398,658.51x = 1,518,964,827,426.75
  5. Step 5: Solve for x
    x = 1,518,964,827,426.75/1,398,658.51
  6. Step 6: Final answer
    x = 1,086,015.51

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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.