Home / 429,536.40-643,357.20-269,089.92

Finding the Fourth Proportional to 429,536.40, 643,357.20 and 269,089.92

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Solution

The fourth proportional to 429,536.40, 643,357.20 and 269,089.92 is: 403,041.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,536.40 : 643,357.20 = 269,089.92 : x
  2. Step 2: Convert to fraction form
    429,536.40/643,357.20 = 269,089.92/x
  3. Step 3: Cross multiply
    429,536.40x = 643,357.20 × 269,089.92
  4. Step 4: Simplify right side
    429,536.40x = 173,120,937,479.42
  5. Step 5: Solve for x
    x = 173,120,937,479.42/429,536.40
  6. Step 6: Final answer
    x = 403,041.37

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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.