Home / 939,651.48-1,296,719.82-509,931.61

Finding the Fourth Proportional to 939,651.48, 1,296,719.82 and 509,931.61

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Solution

The fourth proportional to 939,651.48, 1,296,719.82 and 509,931.61 is: 703,706.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,651.48 : 1,296,719.82 = 509,931.61 : x
  2. Step 2: Convert to fraction form
    939,651.48/1,296,719.82 = 509,931.61/x
  3. Step 3: Cross multiply
    939,651.48x = 1,296,719.82 × 509,931.61
  4. Step 4: Simplify right side
    939,651.48x = 661,238,422,289.71
  5. Step 5: Solve for x
    x = 661,238,422,289.71/939,651.48
  6. Step 6: Final answer
    x = 703,706.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.