Home / 429,595.20-643,080.60-335,116.80

Finding the Fourth Proportional to 429,595.20, 643,080.60 and 335,116.80

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Solution

The fourth proportional to 429,595.20, 643,080.60 and 335,116.80 is: 501,651.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,595.20 : 643,080.60 = 335,116.80 : x
  2. Step 2: Convert to fraction form
    429,595.20/643,080.60 = 335,116.80/x
  3. Step 3: Cross multiply
    429,595.20x = 643,080.60 × 335,116.80
  4. Step 4: Simplify right side
    429,595.20x = 215,507,112,814.08
  5. Step 5: Solve for x
    x = 215,507,112,814.08/429,595.20
  6. Step 6: Final answer
    x = 501,651.58

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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.