Home / 561,719.10-774,983.08-319,830.60

Finding the Fourth Proportional to 561,719.10, 774,983.08 and 319,830.60

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Solution

The fourth proportional to 561,719.10, 774,983.08 and 319,830.60 is: 441,258.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,719.10 : 774,983.08 = 319,830.60 : x
  2. Step 2: Convert to fraction form
    561,719.10/774,983.08 = 319,830.60/x
  3. Step 3: Cross multiply
    561,719.10x = 774,983.08 × 319,830.60
  4. Step 4: Simplify right side
    561,719.10x = 247,863,303,466.25
  5. Step 5: Solve for x
    x = 247,863,303,466.25/561,719.10
  6. Step 6: Final answer
    x = 441,258.46

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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.