Home / 561,421.52-774,815.88-306,811.28

Finding the Fourth Proportional to 561,421.52, 774,815.88 and 306,811.28

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Solution

The fourth proportional to 561,421.52, 774,815.88 and 306,811.28 is: 423,429.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,421.52 : 774,815.88 = 306,811.28 : x
  2. Step 2: Convert to fraction form
    561,421.52/774,815.88 = 306,811.28/x
  3. Step 3: Cross multiply
    561,421.52x = 774,815.88 × 306,811.28
  4. Step 4: Simplify right side
    561,421.52x = 237,722,251,907.13
  5. Step 5: Solve for x
    x = 237,722,251,907.13/561,421.52
  6. Step 6: Final answer
    x = 423,429.18

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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.