Home / 642,939.13-962,516.81-429,176.83

Finding the Fourth Proportional to 642,939.13, 962,516.81 and 429,176.83

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Solution

The fourth proportional to 642,939.13, 962,516.81 and 429,176.83 is: 642,502.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,939.13 : 962,516.81 = 429,176.83 : x
  2. Step 2: Convert to fraction form
    642,939.13/962,516.81 = 429,176.83/x
  3. Step 3: Cross multiply
    642,939.13x = 962,516.81 × 429,176.83
  4. Step 4: Simplify right side
    642,939.13x = 413,089,908,524.93
  5. Step 5: Solve for x
    x = 413,089,908,524.93/642,939.13
  6. Step 6: Final answer
    x = 642,502.37

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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.