Home / 443,916.40-665,923.20-429,919.60

Finding the Fourth Proportional to 443,916.40, 665,923.20 and 429,919.60

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Solution

The fourth proportional to 443,916.40, 665,923.20 and 429,919.60 is: 644,926.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,916.40 : 665,923.20 = 429,919.60 : x
  2. Step 2: Convert to fraction form
    443,916.40/665,923.20 = 429,919.60/x
  3. Step 3: Cross multiply
    443,916.40x = 665,923.20 × 429,919.60
  4. Step 4: Simplify right side
    443,916.40x = 286,293,435,774.72
  5. Step 5: Solve for x
    x = 286,293,435,774.72/443,916.40
  6. Step 6: Final answer
    x = 644,926.47

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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.