Home / 642,960.95-962,549.53-429,198.67

Finding the Fourth Proportional to 642,960.95, 962,549.53 and 429,198.67

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Solution

The fourth proportional to 642,960.95, 962,549.53 and 429,198.67 is: 642,535.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,960.95 : 962,549.53 = 429,198.67 : x
  2. Step 2: Convert to fraction form
    642,960.95/962,549.53 = 429,198.67/x
  3. Step 3: Cross multiply
    642,960.95x = 962,549.53 × 429,198.67
  4. Step 4: Simplify right side
    642,960.95x = 413,124,978,892.11
  5. Step 5: Solve for x
    x = 413,124,978,892.11/642,960.95
  6. Step 6: Final answer
    x = 642,535.10

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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.