Home / 429,619.28-644,251.53-186,475.91

Finding the Fourth Proportional to 429,619.28, 644,251.53 and 186,475.91

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Solution

The fourth proportional to 429,619.28, 644,251.53 and 186,475.91 is: 279,636.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,619.28 : 644,251.53 = 186,475.91 : x
  2. Step 2: Convert to fraction form
    429,619.28/644,251.53 = 186,475.91/x
  3. Step 3: Cross multiply
    429,619.28x = 644,251.53 × 186,475.91
  4. Step 4: Simplify right side
    429,619.28x = 120,137,390,325.64
  5. Step 5: Solve for x
    x = 120,137,390,325.64/429,619.28
  6. Step 6: Final answer
    x = 279,636.87

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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.