Home / 429,094.58-643,646.75-129,577.64

Finding the Fourth Proportional to 429,094.58, 643,646.75 and 129,577.64

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Solution

The fourth proportional to 429,094.58, 643,646.75 and 129,577.64 is: 194,367.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,094.58 : 643,646.75 = 129,577.64 : x
  2. Step 2: Convert to fraction form
    429,094.58/643,646.75 = 129,577.64/x
  3. Step 3: Cross multiply
    429,094.58x = 643,646.75 × 129,577.64
  4. Step 4: Simplify right side
    429,094.58x = 83,402,222,992.55
  5. Step 5: Solve for x
    x = 83,402,222,992.55/429,094.58
  6. Step 6: Final answer
    x = 194,367.93

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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.