Home / 642,938.13-962,515.31-429,175.83

Finding the Fourth Proportional to 642,938.13, 962,515.31 and 429,175.83

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Solution

The fourth proportional to 642,938.13, 962,515.31 and 429,175.83 is: 642,500.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,938.13 : 962,515.31 = 429,175.83 : x
  2. Step 2: Convert to fraction form
    642,938.13/962,515.31 = 429,175.83/x
  3. Step 3: Cross multiply
    642,938.13x = 962,515.31 × 429,175.83
  4. Step 4: Simplify right side
    642,938.13x = 413,088,302,244.38
  5. Step 5: Solve for x
    x = 413,088,302,244.38/642,938.13
  6. Step 6: Final answer
    x = 642,500.87

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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.