Home / 1,138,632.12-1,571,265.14-679,821.39

Finding the Fourth Proportional to 1,138,632.12, 1,571,265.14 and 679,821.39

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Solution

The fourth proportional to 1,138,632.12, 1,571,265.14 and 679,821.39 is: 938,125.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,632.12 : 1,571,265.14 = 679,821.39 : x
  2. Step 2: Convert to fraction form
    1,138,632.12/1,571,265.14 = 679,821.39/x
  3. Step 3: Cross multiply
    1,138,632.12x = 1,571,265.14 × 679,821.39
  4. Step 4: Simplify right side
    1,138,632.12x = 1,068,179,648,134.24
  5. Step 5: Solve for x
    x = 1,068,179,648,134.24/1,138,632.12
  6. Step 6: Final answer
    x = 938,125.34

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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.