Home / 430,979.47-646,468.80-115,427.77

Finding the Fourth Proportional to 430,979.47, 646,468.80 and 115,427.77

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Solution

The fourth proportional to 430,979.47, 646,468.80 and 115,427.77 is: 173,141.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,979.47 : 646,468.80 = 115,427.77 : x
  2. Step 2: Convert to fraction form
    430,979.47/646,468.80 = 115,427.77/x
  3. Step 3: Cross multiply
    430,979.47x = 646,468.80 × 115,427.77
  4. Step 4: Simplify right side
    430,979.47x = 74,620,449,909.55
  5. Step 5: Solve for x
    x = 74,620,449,909.55/430,979.47
  6. Step 6: Final answer
    x = 173,141.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.