Home / 642,938.75-962,516.22-429,176.44

Finding the Fourth Proportional to 642,938.75, 962,516.22 and 429,176.44

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Solution

The fourth proportional to 642,938.75, 962,516.22 and 429,176.44 is: 642,501.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,938.75 : 962,516.22 = 429,176.44 : x
  2. Step 2: Convert to fraction form
    642,938.75/962,516.22 = 429,176.44/x
  3. Step 3: Cross multiply
    642,938.75x = 962,516.22 × 429,176.44
  4. Step 4: Simplify right side
    642,938.75x = 413,089,284,335.59
  5. Step 5: Solve for x
    x = 413,089,284,335.59/642,938.75
  6. Step 6: Final answer
    x = 642,501.77

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1.5x scale

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.